"a" and "d" is left and right
"Space" is jump
Take the bullet and click in some direction for shooting it.
Upgrades are double jumps/tripple jumps and so on.
After shooting you have to pick the bullet up, again. The red round moving things are you enemys.
In each lvl is a door and after killing the enemys, you can open the door.
Sound menu is available but no sound is implemented...
Sorry, there should be an small tutorial but my timeplaning was horrible.