that recipe mechanic is such a good idea...! I really want to try that now. since I only had time to make two levels, I figured you should get access to the upgrades as quickly as possible each wave, but if there were more I think that's a great extension of the morbid cooking theme.
thank you for the other feedback too! defeating the red arm first does make it so you're usually gaining more health than you're losing... balancing the second battle was more difficult because I had to consider both upgrades from battle 1. and glad you liked the simple controls, I was going to make them more complicated but I didn't know how to make it feel good to play so I didn't lol