A S W D to move the characters
SPACE or W to jump (World A)
Q or E to switch between worlds
left mouse to shoot, use the mouse cursor to aim
Your objective is to clean up both worlds. But beware: they are connected
Use your bullets to destroy all invaders!
Don't get hit: you will lose bullets
When out of ammo, switch to the other world
Collect the bullets floating around
Don't touch the walls or an evil invader will be resurrected in world A
