I like the game, especially opening the doors and the animation when the enemy dies. I'm not sure if it's a bug, but I can only shoot upwards, and while running, the character jitters a bit and doesn't move smoothly.
It's designed to only shoot when in idle mode, what I mean is that when you shoot using the spacebar you only press the spacebar and nothing else to successfully shoot at all.
It's a game mechanic, also thanks for playing my game !