Achievement Unlocked Visibility Global Unlocks
Annihilation
Kill 30 enemies in a row without dying or being incapacitated 		17.8%
Beast Slayer
Get the killing blow on the Banshee 		6.8%
Bloodthirsty
Kill 15 enemies in a row without dying or being incapacitated 		33.4%
Bruiser
Kill 10 enemies in a row with the Melee Attack without dying 		3.5%
Catch!
Kill 10 enemies in a row with Grenades without dying 		3.0%
Combustion
Kill 4 enemies simultaneously with a Grenade 		3.6%
Co-Ordinated Fire
Complete any Level, in any difficulty, in a 4-player co-op game 		4.7%
Death Touch
Kill an enemy Player after you die 		3.1%
Denial
End an enemy Player's killing spree 		2.7%
Domination
Win a Capture The Flag round with 10 kills and zero deaths 		2.6%
Eat Lead!
Kill 10 enemies in a row with the Chimera without dying 		5.0%
Field Medic
Revive an incapacitated Player 10 times in Campaign Mode 		3.7%
Flawless
Win a Team Deathmatch round with 10 kills and zero deaths 		2.7%
Grizzled Veteran
Complete all 4 Levels in 'Nightmare' difficulty mode 		3.0%
Gunslinger
Kill 10 enemies in a row with the Piranha without dying 		6.2%
Jack Of All Trades
Obtain Rank 5 in all 4 XP categories 		4.9%
Kleptomaniac
Capture the Flag 3 times during a Capture-The-Flag round 		2.9%
Level 1 Complete
Complete Level 1 in any difficulty mode 		25.8%
Level 2 Complete
Complete Level 2 in any difficulty mode 		11.7%
Level 3 Complete
Complete Level 3 in any difficulty mode 		9.3%
Level 4 Complete
Complete Level 4 in any difficulty mode 		8.6%
Master Of All Trades
Obtain Rank 10 in all 4 XP categories 		2.8%
Matador
Get the killing blow on the Digger 		7.2%
No Escape
Kill 10 enemies in a row with Adhesive Grenades without dying 		2.9%
One-Man Army
Win a Deathmatch round with at least 50 kills 		2.7%
Prolific Killer
Kill 20 enemies in a row without dying or being incapacitated 		28.4%
Regicide
Get the killing blow on Lilith 		6.9%
Rifleman
Kill 10 enemies in a row with the Reaper without dying 		14.7%
Rocket Man
Kill 10 enemies in a row with the Manticore without dying 		3.3%
Seassoned Pro
Complete all 4 Levels in 'Normal' difficulty mode 		5.7%
Sharpshooter
Kill 10 enemies in a row with the Guardian without dying 		6.5%
Slaughter
Kill 25 enemies in a row without dying or being incapacitated 		23.0%
Small Arms Specialist
Complete any Level, in any difficulty, using only the Piranha 		3.1%
Splash Damage
Kill 4 enemies simultaneously with the Shockwave Ability 		5.5%
Spray and Prey
Kill 10 enemies in a row with the Firefly without dying 		26.1%
Stuck On You
Kill 4 enemies simultaneously with an Adhesive Grenade 		4.0%
Survival Expert
Complete Level 3 in any difficulty mode without being incapacitated 		2.6%
Survival Master
Complete Level 4 in any difficulty mode without being incapacitated 		2.6%
Survival Specialist
Complete Level 2 in any difficulty mode without being incapacitated 		2.6%
Survivor
Complete Level 1 in any difficulty mode without being incapacitated 		3.0%
Tsunami
Kill 10 enemies in a row with the Shockwave without dying 		4.3%
Up Close and Personal
Kill 10 enemies in a row with the Barracuda without dying 		15.1%
Weapons Pro
Obtain all Weapons Awards 		2.7%