I loved the concept ! This is a very good entry for a game jam, hopefully I was able to saw it before the notations ends !
The things that I liked
- The two side actions, rhythm plus kill enemies, it is a very fun exercise
- The graphics, it reminds me a little of undertale
- The humor, the text was meaningful or funny, it's good to see other things than just placeholders
The things that can be improved
- I think that the health bar is too much, the concept can run without it and sometimes simplicity is better
- It's not a real problem but big number are really hard to figure out by the player, for example 1 and 7 or much more easy to compare than 10647 and 1558, like you have to count the number to see which is bigger, if you look some games like FTL or Into the breach the dev don't have numbers higher than 20
I don't think this concept can make a real game, but the concept of asking the player to do rhythm and actions in the same time (a little like Crypt of the necrodancer) can make a combat system or something like that, so if you want you can fit this idea in a whole game (I'll be the first to test it).