Starcraft 2 Does Easy Difficulty Affect Storyline

Wings of Liberty [edit]

Overview [edit]

The Wings of Liberty Campaign follows the exploits of the Terran outlaws Jim Raynor and Tychus Findlay. Specifically, the player is assumed to have the role of Raynor from a third-person perspective. The first three missions must be completed in order, after which a series of events occurs that enables the player to begin directing the order in which missions are played.

New units are acquired during each mission, which may then be used in any future missions (except the Prophecy missions, in which the player does not use Terran units). In some cases, the capability to produce a particular type of unit can dramatically alter the challenge of a given mission. Many of the missions force the player to take a defensive position (in contrast to multiplayer), which makes Siege Tanks a particularly beneficial unit to unlock as early as possible.

Each mission can be completed using Casual, Normal, Hard, or Brutal difficulty. New players who have never played any video games in their entire life or are just new to RTS (Real time strategy) type games should probably begin on Normal - the Casual difficulty is very, very casual, to the point that enemies only very rarely attack and usually sit about waiting for the player to come and slaughter them - and their units have only half of their normal HP. In most cases, playing on Hard or Brutal adds more depth to a mission. For example, in the Zero Hour mission on Normal difficulty, the player has to deal with only the assaults of the Zerg, whereas in Hard and Brutal, there are Zerg "drop pods" that crash into the ground delivering Creep Tumors and Zerglings. These drop pods gradually begin to descend closer and closer to the player's base, and since Zerg units move more rapidly on Creep, this can ramp up the challenge quickly.

Most missions reward the player with Credits, as well as the potential to acquire Research points by completing side objectives (see below for more details on both). All missions also feature achievement challenges. In most cases, there is one challenge for completing all of the side objectives, which can be obtained on any difficulty, one challenge that can only be finished on at least Normal difficulty, and one challenge that can only be finished on at least Hard difficulty. Playing every mission on at least Hard difficulty is generally an easy way to enable a savvy player to complete all achievements on a single play of the mission.

Unlockables [edit]

The availability of units, mercenaries, research, and armory upgrades remains the same when missions are replayed through the mission archives. Only those available when each mission was initially played will be present. As an exception, when there are plot branches, all acquired upgrades and units will be available when using the archives to play the missions that were not selected during the storyline.

• Units

Units in the campaign are unlocked by playing the mission that introduces them, as indicated in the Missions section below. Afterwards, the unit is available to be built in the all following missions, making the order in which the missions are played significant.

• Research

The Laboratory is where you can get Research upgrades. They consist of different upgrades to various structures and units and also completely new units. Research points can be found in each mission of the campaign by completing bonus objectives. There are 36 Zerg and 39 Protoss research points in the campaign. Additional points gained beyond the research caps of 25 Zerg and 25 Protoss are exchanged for credits, allowing the player to purchase more Armory upgrades or Mercenaries.

• Armory

The Armory is where you can get upgrades for your units in exchange for credits, which are earned by completing missions. You can start upgrading a particular unit after you finish the mission in which you acquired it. Most available upgrades are the same as those that can be obtained in-game during multiplayer, except that these are in effect at the start of your campaign missions once purchased and do not cost any minerals or gas.

• Mercenaries

Mercenary contracts can be purchased with a one-time credit cost in the Cantina. A contract for a mercenary type is available after you finish the mission in which the base unit was acquired. Once a contract is purchased, the mercenaries can be hired in missions for minerals and gas. The cost is higher than the basic unit, but the upgraded stats outweigh the higher cost. Mercenaries have a cooldown before they can be hired (or hired additionally, in the case of types that permit more than one squad), but arrive instantly once hired, making them great for quick base defense.

• In-Mission Upgrades

Regular unit upgrades to weapons and armor are available from the Engineering Bay and Armory. After completing 9 missions, level 2 upgrades are available, and on the 17th mission, 3 upgrades are available.

• Lost Viking

An arcade minigame accessible from Cantina after 4 missions are completed.

Missions [edit]

The guides for all the missions are written for Brutal difficulty. The strategy for lower difficulty levels is the same, except the enemy won't be as strong, or won't be as smart. However, if you want to elaborate on changes in lower difficulty levels, by all means please edit them in!

For the three choice missions (Colonist 3, Covert 3, and Final 2), you can only play one of the options for storyline purposes. However, you can play the mission you didn't choose through the Mission Log.

Mar Sara [edit]

The Raynor missions are the first three in the game. Credits can not be used until after Zero Hour.

Missions	Unlocks	Credits	Research	Prerequisites
Mar Sara 1: Liberation Day	Marine	-	-	-
Mar Sara 2: The Outlaws	SCV, Medic	45,000	-	Liberation Day
Mar Sara 3: Zero Hour	Bunker	55,000	-	The Outlaws

Colonist [edit]

The Hanson missions can be started after completing the Mar Sara missions.

Missions	Unlocks	Credits	Research	Prerequisites
Colonist 1: The Evacuation	Firebat	100,000	3 Zerg	Zero Hour
Colonist 2: Outbreak	Hellion	110,000	2 Zerg	The Evacuation
Colonist 3a: Safe Haven	Viking	125,000	3 Zerg	Outbreak and any 2 missions after it
Colonist 3b: Haven's Fall	Viking	125,000	3 Protoss	Outbreak and any 2 missions after it

Artifact [edit]

The Tychus missions can be started after completing the Mar Sara missions.

Missions	Unlocks	Credits	Research	Prerequisites
Artifact 1: Smash and Grab	Marauder	110,000	4 Protoss	Zero Hour
Artifact 2: The Dig	Siege Tank	120,000	3 Protoss	Smash and Grab, 8 total missions
Artifact 3: The Moebius Factor	Medivac	120,000	3 Zerg	The Dig, 11 total missions
Artifact 4: Supernova	Banshee	120,000	4 Protoss	The Moebius Factor, 14 total missions
Artifact 5: Maw of the Void	Battlecruiser	125,000	4 Protoss	Supernova

Covert [edit]

The Tosh missions can be started after completing a total of 4 missions.

Missions	Unlocks	Credits	Research	Prerequisites
Covert 1: The Devil's Playground	Reaper	110,000	3 Zerg	4 total missions
Covert 2: Welcome to the Jungle	Goliath	120,000	3 Protoss	The Devil's Playground
Covert 3a: Breakout	Spectre	125,000 (+50,000)	-	Welcome to the Jungle and any 2 missions after it
Covert 3b: Ghost of a Chance	Ghost	125,000 (+50,000)	-	Welcome to the Jungle and any 2 missions after it

Rebellion [edit]

The Horner missions can be started after completing a total of 6 missions.

Missions	Unlocks	Credits	Research	Prerequisites
Rebellion 1: The Great Train Robbery	Diamondback	110,000	3 Zerg	6 total missions
Rebellion 2: Cutthroat	Vulture	120,000	3 Protoss	The Great Train Robbery
Rebellion 3: Engine of Destruction	Wraith	120,000	3 Zerg	Cutthroat
Rebellion 4: Media Blitz	Thor	120,000	-	Engine of Destruction
Rebellion 5: Piercing the Shroud	-	125,000	3 Zerg, 4 Protoss	Media Blitz, including secret objective

Prophecy [edit]

The Zeratul missions can be started after completing The Dig.

These missions are played as the Protoss. The player's normally available Terran units, mercenaries, armory upgrades, and research do not matter in these missions, nor can you use any of the Protoss units in the other missions. Even though there are no new Terran units or cash rewards for completing these missions, doing so early is useful for a large boost to research, possibly making subsequent Terran missions slightly easier to complete in Hard/Brutal difficulties.

Missions	New Unit(s)	Research	Prerequisites
Prophecy 1: Whispers of Doom	Zeratul, Stalker	3 Zerg, 3 Protoss	The Dig
Prophecy 2: A Sinister Turn	Probe, Zealot, Immortal, Dark Templar, High Templar	3 Zerg, 3 Protoss	Whispers of Doom
Prophecy 3: Echoes of the Future	Observer, Colossus	4 Zerg, 2 Protoss	A Sinister Turn
Prophecy 4: In Utter Darkness	Phoenix, Void Ray, Carrier, Mothership	3 Zerg, 3 Protoss	Echoes of the Future

Final [edit]

The Valerian missions are the final set, and can be started after completing Maw of the Void.

Caution: Once the player has finished Gates of Hell, unplayed missions on the Star Map or the Ihan Crystal will no longer be available. The Lost Viking minigame will also be unavailable. Missions which have been previously completed will still be available to replay in the archive. Mercenaries and Armory Upgrades are still available as well.

Missions	Unlocks	Credits	Research	Prerequisites
Final 1: Gates of Hell	-	-	-	Maw of the Void
Final 2a: Belly of the Beast	-	-	-	Gates of Hell
Final 2b: Shatter the Sky	-	-	-	Gates of Hell
Final 3: All-In	-	-	-	Belly of the Beast or Shatter the Sky

Heart of the Swarm [edit]

Overview [edit]

The Heart of the Swarm Campaign is played from the perspective of Sarah Kerrigan, the former Queen of Blades.

Unlockables [edit]

The availability of units and evolution paths remains the same when missions are replayed through the mission archives during the campaign. It is, however, possible to play any unlocked mission in all possible configurations via the master archives.

• Units

Units in the campaign are unlocked by playing the mission that introduces them, as indicated in the Missions section below. Afterwards, the unit is available to be built in all following missions, making the order in which the missions are played significant.

• Sarah Kerrigan

In the Leviathan, the abilities of Kerrigan can be altered. Some missions guarantee Kerrigan Levels; some have bonus objectives that grant up to 4 extra levels. The Mission Archives only show the bonus levels, not the levels Kerrigan is guaranteed to have earned. A total of 69 research points is available in the game, 41 guaranteed, 28 optional via bonus objectives. Each new level can grant additional life, energy, damage, and/or armor for Kerrigan. Kerrigan starts at level 1 with two tiers of abilities. When she reaches level 10, 20, 35, 50, or 60, a new tier of abilities is available. Each tier grants the player a choice of one of two abilities, or three when the Supreme mission is completed, adjustable at any time between missions. Kerrigan customization is available after 4 missions are completed.

• Evolution Pit

The Evolution Pit lets you choose mutations and evolution paths for some types of Zerg units. New units and evolution missions are unlocked by playing missions. A Mutation is a choice out of three options, which you can alter before playing a mission, so these are not permanent. Evolution Strains are permanent path choices and cannot be altered during a playthrough. You may, however, replay any mission with the desired Mutations and Evolution Strains via the Master Archives options in the main menu. An Evolution Strain is chosen by playing a short and very easy mission that lets you use both options, so you have a better understanding of the consequences of your choice. The upgrades usually do not have to be researched during a mission; however, some choices require that you mutate a building. Evolutions are generally a more extreme upgrade than Mutations. Evolution Pit is available after Rendezvous.

• In-Mission Upgrades

Regular unit upgrades to weapons and armor are available from the Evolution Chamber and Spire. After completing 6 missions, level 2 upgrades are available, and after 12 missions, all 3 levels of upgrades are available. Evolution missions do not count.

Missions [edit]

Like in Wings of Liberty, missions are grouped following a number of different story lines. However, each story line is related to a planet, and players cannot select another planet until completing all three missions (two in Space). The first three missions are on Umoja, after which you can select from Kaldir and Char. Once the missions of one of these two planets are completed, Zerus becomes available. After completing these three planets, the choice is between Skygeir and Space. Completing both of these unlocks the Final missions.

Umoja [edit]

The Umoja missions are the first three in the game. Choices regarding Mutations Evolution Strands or Kerrigan abilities can not yet be made until after Rendezvous.

Missions	Unlocks	Kerrigan	Evolution	Prerequisites
Umoja 1: Lab Rat	Zergling	-	-	-
Umoja 2: Back in the Saddle	-	-	-	Lab Rat
Umoja 3: Rendezvous	Swarm Queen	-	-	Back in the Saddle

Kaldir [edit]

The Kaldir missions can be started after completing the Umoja missions.

Missions	Unlocks	Kerrigan	Evolution	Prerequisites
Kaldir 1: Harvest of Screams	Roach	+5 (+2)	-	Umoja
Kaldir 2: Shoot the Messenger	Hydralisk	(+3)	Zergling	Harvest of Screams
Kaldir 3: Enemy Within	-	(+1)	Roach	Shoot the Messenger

Char [edit]

The Char missions can be started after completing the Umoja missions.

Missions	Unlocks	Kerrigan	Evolution	Prerequisites
Char 1: Domination	Baneling	+5 (+2)	-	Umoja
Char 2: Fire in the Sky	-	(+3)	Zergling	Domination
Char 3: Old Soldiers	Aberration	(+2)	Baneling	Fire in the Sky

Zerus [edit]

The Zerus missions can be started after completing the Kaldir or Char missions. After The Crucible, Kerrigan has different abilities, which are locked. After Supreme, these abilities are added as a third option to each tier, and all become available to choose from.

Missions	Unlocks	Kerrigan	Evolution	Prerequisites
Zerus 1: Waking the Ancient	Mutalisk	(+3)	-	Kaldir or Char
Zerus 2: The Crucible	Swarm Host	+10 (+1)	-	Waking the Ancient
Zerus 3: Supreme	-	+5 (+4)	Hydralisk	The Crucible

Skygeirr [edit]

The Skygeirr missions can be started after completing the Kaldir, Char, and Zerus missions.

Missions	Unlocks	Kerrigan	Evolution	Prerequisites
Skygeirr 1: Infested	Infestor	(+3)	-	Kaldir, Char and Zerus
Skygeirr 2: Hand of Darkness	-	(+2)	Mutalisk	Infested
Skygeirr 3: Phantoms of the Void	Ultralisk	+4 (+3)	-	Hand of Darkness

Space [edit]

The Space missions can be started after completing the Kaldir, Char, and Zerus missions.

Missions	Unlocks	Kerrigan	Evolution	Prerequisites
Space 1: With Friends Like These	-	-	-	Kaldir, Char and Zerus
Space 2: Conviction	-	+9 (+2)	Swarm Host	With Friends Like These

Final [edit]

The Final missions can be started after completing the Skygeirr and Space missions.

Missions	Unlocks	Kerrigan	Evolution	Prerequisites
Final 1: Planetfall	-	-	Ultralisk	Skygeirr and Space
Final 2: Death From Above	-	-	-	Planetfall
Final 3: The Reckoning	-	-	-	Death From Above

Legacy of the Void [edit]

Overview [edit]

The Legacy of the Void Campaign is focusing on Artanis, leader of the Protoss race.

Unlockables [edit]

• Units

Units in the campaign are unlocked by playing the mission that introduces them, as indicated in the Missions section below. Afterwards, the unit is available to be built in all following missions, making the order in which the missions are played significant.

• Assembly Panel

In the War Council of the Spear of Adun is located the Assembly Panel. Aided by the Preserver Rohana, you can customize your army with the Protoss technology encountered during missions. There are ten warrior categories, but only two available at the start: Zealot and Stalker. For each category, you have the choice between several factions that present different abilities. The assignments are not permanent, and they can be changed between missions.

• Solar Core

The Solar Core is the source of energy of the Spear of Adun. The Core interface is an array that displays an overview of the weapon and support systems of the ship. For each of the six systems, you have three ability choices, but only one can be configured to be active at a time. Each ability has a cost in Solarite, which can be gathered by completing side objectives in missions. The Solarite then needs to be allocated to power the weapon and support systems, or routed to the auxiliary systems (starting supply increase and construction time reduction). The Phase-smith Karax takes care of the Solar Core.

• In-Mission Upgrades

Regular unit upgrades to weapons and armor are available from the Forge and Cybernetics Core. After completing a number of missions, level 2 upgrades are available, and after some more missions, all 3 levels of upgrades are available.

Missions [edit]

Whispers of Oblivion [edit]

The Whispers of Oblivion missions are a prologue to Legacy of the Void, featuring Zeratul. Though anterior in time, these missions require more advanced skills than the first missions of the main Legacy of the Void Campaign.

• Dark Whispers
• Ghosts in the Fog
• Evil Awoken

Aiur [edit]

The Aiur missions are the first three missions in the game.

Missions	New unit(s)	Solarite	Prerequisites
For Aiur!	-	-	-
The Growing Shadow	-	-	For Aiur!
Spear of Adun	Zealot, Centurion, Stalker, Dragoon	-	The Growing Shadow

Moebius Corps [edit]

The Moebius Corps missions can be started after completing the Aiur Missions.

Missions	New unit(s)	Solarite	Prerequisites
Sky Shield	-	10 (+15)	Aiur
Brothers in Arms	Immortal, Annihilator	(+15)	Sky Shield
Templar's Charge	Carrier, Tempest, Mothership (after 1 more mission)	15 (+20)	Purifier or Tal'darim

Shakuras [edit]

The Shakuras missions can be started after completing the Aiur Missions.

Missions	New unit(s)	Solarite	Prerequisites
Amon's Reach	Dark Templar, Avenger	10 (+15)	Aiur
Last Stand	Khaydarin Monolith	(+10)	Amon's Reach

Ulnar [edit]

The Ulnar missions are:

Missions	New unit(s)	Solarite	Prerequisites
Temple of Unification	Phoenix, Corsair	(+10)	Brothers in Arms, Shakuras and Forbidden Weapon
The Infinite Cycle	Adept, Blood Hunter	20 (+15)	Temple of Unification
Harbinger of Oblivion	High Templar, Dark Archon, Vanguard	(+15)	The Infinite Cycle

Purifier [edit]

The Purifier missions are:

Missions	New unit(s)	Solarite	Prerequisites
Forbidden Weapon	Sentry, Energizer, Sentinel	(+15)	Brothers in Arms or Shakuras
Unsealing the Past	Colossus, Reaver, Havoc, Wrathwalker	(+20)	Ulnar
Purification	Mirage	15 (+15)	Unsealing the Past

Tal'darim [edit]

The Tal'darim missions are:

Missions	New unit(s)	Solarite	Prerequisites
Steps of the Rite	Void Ray, Destroyer	(+20)	Ulnar
Rak'Shir	Ascendant, Arbiter	15 (+15)	Steps of the Rite

Return to Aiur [edit]

The Return to Aiur missions end the main Legacy of the Void story.

Missions	New unit(s)	Solarite	Prerequisites
Templar's Return	-	-	Templar's Charge, Purifier and Tal'darim
The Host	-	-	Templar's Return
Salvation	-	-	The Host

Into the Void [edit]

Into the Void is a 3-mission epilogue to the Legacy of the Void Campaign.

• Into the Void
• The Essence of Eternity
• Amon's Fall

Mission Packs [edit]

Nova Covert Ops [edit]

This mission pack focuses on the Terran Ghost Nova. The first 3-mission pack was released on March 29, 2016. The second pack was released on August 2, 2016. The last pack was released on November 22, 2016.

Unlockables [edit]

Nova has access to special equipment to use in battle, which can be switched between mission. Covert Ops Units will have access to shared unit technology.

• Units

Nova uses Covert Ops Units, an elite army of the Terran Dominion. The types of units, the technology, upgrades, and buildings are restricted compared to a basic Terran army. But all units are Elite (using Mercenary Customs), and a few upgrades are accessible from the start of the mission (like Combat Shields for Marines and Concussive Shells for Marauders).

• Equipment

Reigel assists Nova in her missions by granting her equipment to use. There are four categories of equipment: helmet, suit, gadget, and weapon. Each mission grants Nova new technology, either sent by Reigel to the battlefield or stolen by Nova from the enemy. Nova can equip a total of 4 pieces of equipment, which can be switched before starting a mission.

• Unit Technology

Reigel grants Nova technology to upgrade the units. The technology improves their normal weapons and skills. Each technology can be equipped by only one type of unit at a time.

• In-Mission Upgrades

Regular unit upgrades to weapons and armor are available from the Engineering Bay and Armory.

Missions [edit]

Nova acquires new equipment and technology as a reward, while playing or by completing optional objectives.

Missions	New unit(s)	New Equipment (In-Mission)	New Equipment (Reward)	New Technology (Reward)
The Escape	-	C-20A Canister Rifle, Pulse Grenade, Ghost Visor, Tactical Stealth Suit	Hellfire Shotgun, Flashbang Grenades	-
Sudden Strike	SCV, Marine, Reaper, Marauder	Turbo Jumpsuit	Rangerfinder Oculus	Laser Targeting System, Internal Tech Module, Super Stimpack, Jumpjet, Spider Mine
Enemy Intelligence	Hellbat, Siege Tank	Monomolecular Blade	Stim Infusion	-
Trouble in Paradise	Goliath, Banshee	-	Apollo Infantry Suit	Regenerative Bio-Steel, Advanced Cloaking Field, Smart Servos
Night Terrors	Liberator, Raven	-	Holo Decoy	Magrail Munitions
Flashpoint	-	-	Plasma Rifle	-
In the Enemy's Shadow	-	Indoctrination Visor, Phase Reactor Suit, Blazefire Gunblade	-	Special Ordnance
Dark Skies	Battlecruiser	-	Ionic Force Field	-
End Game	-	-	-	-

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Source: https://liquipedia.net/starcraft2/Campaign

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