Final Destination: Complete The End in a party of four.
Full-time Ass-kicker: Reach rank 20.
Game in a game: Complete a game in a game.
Growing Stronger: Complete a map with a Feat of Strength enabled.
Halfway Awesome: Reach Rank 10.
Hercules: Complete a map with 5 Feats of Strength enabled.
Hope Rides Alone: Complete Facility, Rocky Fields, Giant Trees and Swamp.
Humble Beginnings: Complete your first map.
Team Player: Complete one level with 5 Feats of Strength enabled in Co-op.
The Bas(e)ics: Build 20 tower bases.
The Best Defense is Offense: Upgrade a tower to the max.
Total Badass: Complete Facility, Rocky Fields, Giant Trees and Swamp with 5 Feats of Strength enabled.