Escape any level without obtaining any weapons
Escape any level without spawning more than 1 building
Escape any level in under 9 minutes
Max out your weapon inventory
Successfully escape with the Assault Rifle in your inventory
Successfully escape with the Shotgun in your inventory
Successfully escape with the SMG in your inventory
Kill 1000 enemies in total
Kill 2500 enemies in total
Kill 5000 enemies in total
Kill 10000 enemies in total
Reach the final wave of Level 1: Mercury
Successfully escape Level 1: Mercury
Reach the final wave of Level 2: Venus
Successfully escape Level 2: Venus
Reach the final wave of Level 3: Moon (Earth)
Successfully escape Level 3: Moon (Earth)
Reach the final wave of Level 4: Mars
Successfully escape Level 4: Mars
Reach the final wave of Level 5: Europa (Jupiter)
Successfully escape Level 5: Europa (Jupiter)
Reach the final wave of Level 6: Titan (Saturn)
Successfully escape Level 6: Titan (Saturn)
Reach the final wave of Level 7: Miranda (Uranus)
Successfully escape Level 7: Miranda (Uranus)
Reach the final wave of Level 8: Triton (Neptune)
Successfully escape Level 8: Triton (Neptune)
Successfully escape Level 9: Pluto
Beat all levels on EX Mode
Kill 500 enemies in total