Hero
Complete the game on any difficulty setting
50 
Bomba Punter
Punt 20 Bombas
20 
My Head A-splode
Get 50 headshots
20 
Make 'Em Scream
Get 100 soldiers to scream
20 
Completionist
Complete the game with 100% of the items
20 
Let's Get Punchy
Melee 5 soldiers
15 
To Kill a Blackbird
Destroy the helicopter attacking the vice president
15 
Minimalist
Complete the game with less than 13% of items
10 
Proven Grounds
Complete the three challenge packs in the Proving Grounds
10 
Serious Complex
Level up to experience level 50
10 
Look Out!
Kill a soldier with a Bomba
5 
Walkin' on Water
Make it from one end of the lake to the other in hyperspeed
5