Hey really cool game! I really liked the idea. At first I was wondering why you don't just stick the chest in some corner and just surround it with your 10 guys... but then I realized its 10 guys per room, NOT for the whole level!
I one very annoying thing though is at the beginning of a wave I clicked on the menu button just to glance if that info that comes up when you first start the game would show up... and right when clicking the button it instantly "Defeated" me. This wouldn't be super annoying if it restarted the wave... but it restarted the whole game. I tried it again at wave one and same thing, it "Defeated" me. It did kinda kill my want to keep playing. I'd suggest if it is a bug you may want to warn people on the game page.
Sorry that happened to me, and maybe its just some weird bug for me?? Otherwise though very cool game. I also like the music and everything too! Good luck with this!!