There's an aftermath score screen, yes! It's not necessarily a deep breakdown, but you get scored on kills, "chain cuts" which is killing more than one enemy on a single path, how quickly you make finish planning your route, and distance management! Thanks for your comment :)
Then don't join a game jam...? The whole point of a jam is to make something small in the given timeframe. If you can't finish in time, pick longer running jams (there's one that ends in 2030 right now) or simply don't participate. It kinda seems like you just don't like the idea of game jams to begin with.
