Thanks for playing! Glad you enjoyed :)
Yes, the TNT and the ladders are utterly broken! Those item mechanics went in towards the end while we were doing the world design and we just didn't have a chance to fully balance them with real play testing. I think for the scope of the game jam it's sort of okay that you end up easily demolishing the world, since it's kinda fun to just blow it all up anyway. In a more fully fleshed out version of the game we would absolutely balance it a little better.