I was unable to shoot, with keyboard/mouse and with controller, but the art was good.
Viewing post in Little Timmy goes to hell jam comments
Hello there !
With keyboard you aim & shoot with arrow keys.
With controllers you aim with the right stick and shoot with the right trigger (you have to do it at the same time or else it won't shoot).
Please let me know if this still don't work for you (along with itf you were using the webgl or windows build) or if the tutorial level was just unclear.
In any case thanks for trying my game. :)