Here is the full list of all 15 SHOCK TROOPERS achievements.
Complete the game in multiplayer (local or online)
Complete a stage with full life
Complete the game dying more than 40 times
Use all the weapons
Play with all characters
Throw 100 grenades (2nd weapon)
Throw 500 grenades (2nd weapon)
Pick up 500 power ups
Reach a score of 5 000 000
Complete the game in "Lonly Wolf"
Complete the game in "Team Battle"
Complete a stage without dying ( "Lonly Wolf" )
Kill 500 soldiers
Kill 1000 soldiers
Complete the game using less than 10 credits