I think if the left and right arrows (or a and d) rotate the ship and an action button escalates it, it could be better. These types of games usually have controls like those. Not too much to say about the inventory, wasn't very good at the game. As for my game, I had thought about adding the controls you mentioned, but I am more used to control the character with the arrow keys. Thought to change it before submitting but was pretty tired (and lazy).