You are the pink cube (Cass), eliminate the blue cube (Mr. Richard)
Destroy both yellow towers (1 on each side of the map) to be able to deal a hit on Richard, before having to destroy them again. REPEAT till you BEAT!
Left mouse to shoot green bullets.
Press shift to dash.
Dodge the red bullets.
3 Hearts. 2 Yellow HP bars for the towers, and 1 big red one for Mr. Richard.
Good luck!!