- Level concept art
Shoot all Secret Skullshots in all stages of a level to unlock the concept art for that level:

Venice concept art	Shoot all Secret Skullshots in all the Venice stages.
Manor House concept art	Shoot all Secret Skullshots in all the Manor House stages.
Prison Cells concept art	Shoot all Secret Skullshots in all the Prison Cells stages.
Bunker concept art	Shoot all Secret Skullshots in all the Bunker stages.
Ocean Liner concept art	Shoot all Secret Skullshots in all the Ocean Liner stages.
Warehouse concept art	Shoot all Secret Skullshots in all the Warehouse stages.
Steel Mill concept art	Shoot all Secret Skullshots in all the Steel Mill stages.
Warzone concept art	Shoot all Secret Skullshots in all the Warzone stages.

- Achievements
Do the following things to obtain the corresponding Gamerscore points:

5 Points
Listmania	Save 5 Playlists in GunPlay.
10 Points
A Stately Achievement	Finish Manor House on any difficulty level in Tournament.
Welcome to The Club	Be victorious in your first ranked match.
Out on Probation	Finish Prison on any difficulty level in Tournament.
Taking part that counts	Be on the winning team in a ranked team game.
Realizes on the Board	Get in the top 100,000 on any leaderboard.
Defcon 3	Finish Bunker on any difficulty level in Tournament.
Sharp Steel	Finish the Steel Mill on any difficulty level in Tournament.
Waterway to Go	Finish Venice on any difficulty level in Tournament.
Splash Down	Finish Ocean Liner on any difficulty level in Tournament.
Breakthrough	Smash 50 Doors in either Tournament or Single Event.
Crate Work	Finish Warehouse on any difficulty level in Tournament.
Scavenger	Shoot All Skullshots on one level in either Tournament or Single Event.
Rack em Up	Achieve your first x10 combo in either Tournament or Single Event.
15 Points
Points Mean Prizes	Realize 10,000 points in a Realize Match.
20 Points
Hard Time	Finish Prison on Insane level.
Siege Breaker	Your team survives for more than 2 Minutes in Team Siege.
One Shot	Get 100 Sniper Kills in Ranked Matches.
Save our Souls	Spell the word SOS in the Warehouse in either Tournament or Single Event.
Watery Grave	Finish Ocean Liner on Insane level.
First Blood	25 'First Kills' in any Ranked Multiplayer game mode.
Bunker Buster	Finish Bunker on Insane level.
Sprint the Gauntlet	Finish a Run the Gauntlet with 20 seconds left.
Hard Steel	Finish Steel Mill on Insane level.
Full House	Finish Manor House on Insane level.
Show Off	Achieve every 'in game award' in one level in either Tournament or Single Event.
Capture King	Capture the base 25 times in Ranked matches.
A Crate Effort	Finish Warehouse on Insane level.
Big Game Hunted	Survive for 120 seconds as the hunted in Hunter Hunted.
Target Man	Shoot 100 Skull shot targets in Team Skullshot.
Premium Membership	Finish a Tournament on any difficulty with all 8 characters.
Brawler	Get 100 Melee Kills in Ranked Matches.
Fox Hunter	Kill the Enemy Fox 25 times in Ranked Matches.
Wet and Wild	Finish Venice on Insane level.
Demolition Man	Get 100 Explosive Kills in Ranked Matches.
25 Points
Club on Tour	Be victorious in a ranked match in every location.
Melee the Elephant	Kill 30 enemies in a level with a melee attack in either Tournament or Single Event.
Tabletopper	Get in the top 5,000 on any leaderboard in Tournament.
The Awards Show	Achieve one of every 'in game award' either in Tournament or Single Event.
Top Gun	Get more than 10,000 points for a single kill in either Tournament or Single Event.
30 Points
Warlord	Finish the game on any difficulty level in Tournament.
Free For All Elite	Be victorious in any free-for-all game without dying.
Efficiency	Kill every enemy on a level using less than 50 bullets in either Tournament or Single Event.
Bag them Bones	Shoot All Skullshots on every level in either Tournament or Single Event.
Hidden Treasures	Shoot All Secret Skullshots in every level in either Tournament or Single Event.
Combo Killer	Reach the level objective with a maximum combo in either Tournament or Single Event.
40 Points
Join the Club	Play an event with every one of the 6 unlocked characters in either Tournament or Single Event.
Skillzone	Finish Warzone on Insane difficulty
No, Seriously	Kill 10,001 people in multiplayer Ranked Matches.

- Bonus characters
Successfully complete the indicated task to unlock the corresponding character:

Killin	Successfully complete four locations in Tournament mode.
Nemo	Successfully complete all locations in Tournament mode.

- Character ending sequences
Successfully complete all eight tournaments, then replay any of the tournaments with the indicated character to unlock their ending sequence:

Nemo's ending	Replay a tournament with Nemo.
Dragov's ending	Replay a tournament with Dragov.
Killen's ending	Replay a tournament with Killen.
Adjo's ending	Replay a tournament with Adjo.
Finn's ending	Replay a tournament with Finn.
Renwick's ending	Replay a tournament with Renwick.
Kuro's ending	Replay a tournament with Kuro.
Seager's ending	Replay a tournament with Seager.

- Real mode
Successfully complete all eight tournaments to unlock the Real difficulty.

- Levels
Successfully complete the indicated tournament to unlock the corresponding level in Single Event and Tournament modes:

Venice	Successfully complete the Steel Mill tournament.
Bunker	Successfully complete the Manor House tournament.
Ocean Liner	Successfully complete the Prison Cells tournament.
Manor House	Successfully complete the Warehouse tournament.
Warehouse	Successfully complete the Ocean Liner tournament.
Prison Cells	Successfully complete the Venice tournament.
Warzone	Successfully complete the Bunker tournament.

- Character concept art
Successfully complete all eight tournaments, then replay any of the tournaments with the indicated character to unlock their concept art:

Nemo concept art	Replay a tournament with Nemo.
Dragov concept art	Replay a tournament with Dragov.
Killen concept art	Replay a tournament with Killen.
Adjo concept art	Replay a tournament with Adjo.
Finn concept art	Replay a tournament with Finn.
Renwick concept art	Replay a tournament with Renwick.
Kuro concept art	Replay a tournament with Kuro.
Seager concept art	Replay a tournament with Seager.

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