Defeat the Reaper.
Defeat the Heaven Herald.
Defeat the Lord of Beetles.
Defeat the Emperor
Have 6 drones in a single run.
Die.
Plant and harvest every seed in a single run.
Win the game once to unlock the Ember Hawk.
Destroy 15 pirate planets to unlock the Dwarf Comet.
Travel through 30 portals to unlock the Tiny Typhoon.
Kill 100 enemies to unlock the Sky Pondlet.