- Xbox 360
Achievements:
The World is Safe For Now
Reward: 10 Points
Objective: Complete the game once
True Hero
Reward: 25 Points
Objective: Survive for 5:00 in Survival Mode.
The Fast Lane
Reward: 20 Points
Objective: Complete the game in less than 3 hours
Ala Carte
Reward: 20 Points
Objective: Complete a level without collecting any health or energy items
Key Master
Reward: 20 Points
Objective: Collect all keycards
Playing with a Full Deck
Reward: 15 Points
Objective: Unlock all alien forms by beating levels 1-10
Unscathed
Reward: 10 Points
Objective: Defeat any level without getting hit
A Hero's Workout
Reward: 10 Points
Objective: Defeat 50 enemies
A Hero's Marathon
Reward: 15 Points
Objective: Defeat 300 enemies
No Time to Waste
Reward: 20 Points
Objective: Post a time on all level leaderboards.
Versatility
Reward: 15 Points
Objective: Harm the final boss using each alien before delivering the final blow.
All Powered Up
Reward: 20 Points
Objective: Collect all energy and health extenders