You should add a way to switch between all your purchased weapons. If you wanted you could even keep the attack lv and make it a purely favorite weapon graphic sort of thing
I have found that the rebound gun is the best gun for finding the secret passages. it's easy to notice that they stop bouncing and go through the wall.
I know it's already been said but "wow, just wow" I literally said that as i was trying all the options out. It's fine if you're going to make a game like this but I was expecting it to have more options and some humor. Not just only kids that don't hit you are good. Try it out and you'll see that one sentence sums up everything.
I think you should add a timer on the screen somewhere that lets you know how long you been in the doom surf cause I feel like I've been there alot longer than 30 secs and it won't give it to me
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