Only move along the middle line until everything goes silent

Never shoot to the left (default rotation)

Never turn your ship manually

Destroy all enemies while you are slowed down

Don't hit yourself

Keep all shooting enemies alive and active till the end

Hit every enemy at least once

Never miss a shot

Destroy 30 enemies from inside the rocks

Stay on top of an orb which does not exist anymore

Never touch a solid block

Destroy all enemies while being haunted by a ghost

Clean-up everything before finishing the stage

Create the smallest room possible

Only attack against the fly direction

Capture enemies with only one player in coop-mode

Destroy 5 enemies while no light is shining on them

Never let any of the fields disappear

Strike only while the shield is active

Travel a large total distance through teleportation

Destroy all enemies once in reverse order

Fly through the gate

Destroy the same player two times with the same ray

Get hit by every tank-weapon exactly once