Unlock all ships
Complete the first mission
Complete mission 8
Complete mission 16
Defeat 1000 enemies
Defeat 10000 enemies
Unlock the Lost modifier
Unlock the Volatile modifier
Unlock the Minions modifier
Unlock the Royal Guard modifier
Unlock the Rugged modifier
Unlock the Celerity modifier
Unlock the Obliterate modifier
Unlock the Promotion modifier
Unlock the Greed modifier
Unlock the Brittle modifier
Complete a custom challenge of level 5 or higher with all modifiers enabled