Train the rook (any difficulty)

Story progression in Act 1, Chapter 2

Story progression in Act 1, Chapter 4

Story progression in Act 1, Chapter 6

Story progression in Act 2, Chapter 4

Story progression in Act 2, Chapter 5

Story progression in Act 2, Chapter 6

Story progression in Act 3, Chapter 3

Story progression in Act 3, Chapter 4

Story progression in Act 3, Chapter 6

Story progression in Act 4, Chapter 2

Story progression in Act 4, Chapter 3

Story progression in Act 4, Chapter 6

Story progression in Act 5, Chapter 1

Story progression in Act 5, Chapter 2

Story progression in Act 5, Chapter 4

Story progression in Act 5, Chapter 5

Complete all campaign acts on Casual Difficulty

Complete all campaign acts on Normal Difficulty

Complete all campaign acts on Hardcore Difficulty

Complete all campaign acts on Insane Difficulty

Recover 5 collectibles (any difficulty)

Recover 20 collectibles (any difficulty)

Recover all 41 collectibles (any difficulty)

Complete 1 chapter in co-op on any difficulty (Marcus or Dom)

Complete 10 chapters in co-op on any difficulty (Marcus or Dom)

Complete all acts in co-op on any difficulty (Marcus or Dom)

Perform 30 perfect active reloads (any mode)

Melee 30 Tickers (any mode)

Kill 30 enemies with a cover mounted Mulcher (any mode)

Kill 30 enemies with the heavy Mortar (any mode)

Kill 10 enemies with a planted grenade (any mode)

Melee 10 enemies down with the Boomshield equipped (any mode)

Kill 30 enemies with the Scorcher Flamethrower (any mode)

Kill an enemy with every weapon in the game (any mode)

Kill 100,000 enemies (any mode)

Win 3 matches of Wingman (public)

Capture 10 meatflags in Submission (public)

Win 10 rounds of Guardian as the leader (public)

Win three matches of King of the Hill (public)

Successfully complete the 5 lessons of multiplayer Training Grounds

Play 1999 rounds of multiplayer (any mode)

Win a multiplayer match on each map (any mode)

Survive the first 10 waves of Horde (any difficulty, any map)

Survive all 50 waves of Horde (any difficulty, any map)

Win 10 chainsaw duels (any mode)

Kill 10 enemies with a grenade while down but not out (any mode)

Use a meatshield to save your life 10 times (any mode)

Submit a spectator photo

Perform all 11 unique executions on a downed enemy

Complete waves 1 through 10 on all Flashback Map Pack maps in Horde (any difficulty)

Win a multiplayer match on each of the 5 Flashback Map Pack maps (any mode except Wingman)

Win a Wingman match on each of the 5 Flashback Map Pack maps

Survive first 10 Horde waves on Combustible Map Pack maps as a team

Win a multiplayer match on each of the 3 Combustible Map Pack maps (any mode except Wingman)

Win a Wingman match on each of the 3 Combustible Map Pack maps

Win an Annex match on each Flashback and Combustible Map Pack map (public matches only)

Earn enough multiplayer experience to reach level 5 (Public only)

Earn enough multiplayer experience to reach level 15 (Public only)

Earn enough multiplayer experience to reach level 25 (Public only)

Reach level 50 and play a match on each of the 4 Snowblind Map Pack maps (Public only)

Reach level 100 and win a match on each of the 4 Snowblind Map Pack maps (Public only)

Complete waves 1 through 10 on all Snowblind Map Pack maps in Horde (any difficulty)

Complete waves 1 through 50 on any Snowblind Map Pack map in Horde (any difficulty)

Play a multiplayer match on each of the 4 Snowblind Map Pack maps (any mode)

Win a multiplayer match on each of the 4 Snowblind Map Pack maps (any mode)

Without being detected, complete the "Road to Ruin" deleted scene after choosing the stealth option

Complete the "Road to Ruin" deleted scene after choosing the guns blazing option

Complete the "Road to Ruin" deleted scene in co-op as either Marcus or Dom

Reach level 8 in multiplayer and complete waves 1 - 10 on the War Machine map in Horde

Reach level 10 in multiplayer and complete waves 1 - 10 on the Highway map in Horde

Reach level 15 in multiplayer and complete waves 1 - 20 on the Sanctuary map in Horde

Reach level 20 in multiplayer and complete waves 1 - 20 on the Way Station map in Horde

Reach level 30 in multiplayer and complete waves 1 - 30 on the Allfathers Garden map in Horde

Reach level 40 in multiplayer and complete waves 1 - 40 on the Memorial map in Horde

Reach level 50 in multiplayer and complete waves 1 - 50 on the Nowhere map in Horde

Play a multiplayer match on each of the 7 Dark Corners Map Pack maps (any mode)

Win a multiplayer match on each of the 7 Dark Corners Map Pack maps (any mode)

Kill 25 Bloodmounts with a Scorcher while playing Horde on a Dark Corners Map Pack map