Get over 50 kills with each weapon type
Earn a gold Aquila in every survival challenge
Play through each mission with two different Space Marines
Complete a mission without dying
Continue playing to unlock this secret achievement.
Find all the collectables
Unlock all weapons & ability upgrades
Kill 5000 enemies in total
Complete a mission without using melee
Achieve a "Bloodbath" Kill streak
Complete a mission in co-op mode
Use a special move
