I don't have much to comment on but I do think the game's clock is tied to the monitor refresh rate. My monitor on 144 Hz made the enemies spawn faster, have them attack faster and even made my bomb faster XD.
OH NO, that's hilarious. I'll have to figure out how to make sure it runs the same on all computers/monitors. I think it's tied to delta time, but I was running so low on time that I didn't have the chance to check. ^^;;