Here is the full list of all 10 SHOCK TROOPERS 2nd Squad achievements.
Complete the game dying more than 40 times
Throw 100 grenades (2nd weapon)
Play with all characters
Complete a stage with full life
Use all the weapons
Throw 500 grenades (2nd weapon)
Complete the game in multiplayer (local or online)
Reach a score of 5,000,000 points
Complete a stage without dying
Complete the game using less than 10 credits