Nice work! I liked the switching mechanic, it kinda reminded me of Doom Eternal where you have to juggle which weapons you use on which enemies. I feel like the reason why you have to use each weapon for specific enemies could be a bit more natural though. That way, instead of reading in the rules why you can't use specific weapons on specific enemies, it just makes sense because of the properties of the weapon and the enemies. For ex, if an enemy was really small and fast you would want to use a weapon with a large area of impact so you don't have to be as accurate. Cool ideas and nice job!