Simple and well executed game concept. I would add though that powerups sometimes spawn almost exactly where you just picked one up (which could negate the benefit of picking them up or outright kill you randomly).
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I'm honestly not that strong at programming either, but would be willing to give it a look too if you end up stumped. You'll probably need to add in some code to check the coordinates of any players before spawning, to see if they're within a certain distance, and then I guess just keep retrying the spawn until it works. Also gave your tomb torch trouble game a try and gotta say I love the 2.5D aesthetic!