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