It's not my graphics lol, the kenney jam necessitates that we use assets from kenney.nl, so that's all I did. The only difference was the slight colour correction and glow on the bullets. The difficulty is definitely too much, especially given that you can't upgrade the towers, and I unfortunately ran out of time for that. More levels and upgrades for towers are next on the agenda if I get back to development on the game. Thanks for checking it out!