Here is the full list of all 12 Ben 10 Alien Force: The Rise of Hex achievements worth 200 gamerscore.
Post a time on all level leaderboards.
Collect all energy and health extenders
Complete the game in less than 3 hours
Complete the game once
Harm the final boss using each alien before delivering the final blow.
Collect all keycards
Defeat 300 enemies
Survive for 5:00 in Survival Mode.
Unlock all alien forms by beating levels 1-10
Defeat 50 enemies
Defeat any level without getting hit
Complete a level without collecting any health or energy items