Really novel idea of running through a dungeon and intentionally triggering all the traps. Also like the idea of then using your knowledge of where the traps are to lead the enemies to their death, great work! I think there maybe could have been some tiny indicators of where traps are, like a tiny 2 pixel shadow under the anvils before they drop since otherwise the player just has to step on every dungeon square like some sort of corporate robot (or maybe that's the point).
There were a surprising number of levels - I think you could have made a different looking page for between levels or even just change the "Start Crawling" text to indicate there's another level.