| Achievement | How to unlock
|
|---|
| Airborne for 60 Seconds | Airborne for 60 Seconds.
|
| Collected All Weapons | Collected All Weapons.
|
| Killed 13 Hammerheads | Killed 13 Hammerheads (ever)
|
| Killed 13 Skull Mechs | Killed 13 Skull Mechs (ever)
|
| Killed 6 Enemies in Single Explosion | Killed 6 Enemies in Single Explosion.
|
| Killed 666 Enemies | Killed 666 enemies (ever)
|
| Reached Wave 10 | Reached Wave 10.
|
| Reached Wave 20 | Reached Wave 20.
|
| Reached Wave 30 | Reached Wave 30.
|
| Reached Wave 40 | Reached Wave 40.
|
| Reached Wave 50 | Reached Wave 50.
|
| Reached Wave 60 | Reached Wave 60.
|