Survive 10 Endless Waves
Survive 20 endless waves
Survive 40 endless waves
Finish a level using your last cell to defeat the last enemy
Finish a stage killing the last 15 enemies with a single bomb
Upgrade a Powerup to max level
Kill 2500 enemies
Collect 100 stars
Upgrade a pet to maximum level
Collect 300 stars
Kill 15000 enemies
Unlock All Companions