You were close! The Witch boss is the final boss of the game.
Thanks for the feedback. I agree with all your points. I wanted you to know that I value it and take it into account. I put up a new version of the game with a few changes. You move and jump a little slower, your attack range is longer so the zombies are easier to kill without, and most importantly, you have 3 HP now :) I think the game plays a lot better now.
I'm not expecting you to play though it again (although you are welcome to!) but I did want to thank you for playing and let you know that I take feedback into account. I don't normally make post-jam versions of games, but this one I had a lot of fun with and I wanted to clean up the gameplay. Thanks for playing!