It's crazy that you put all of this together yourself, you should be proud of that!
The sprites looked really good, and the couple of references that were in the game were cute, I really liked Tempus being the 4 horsemen.
Sounds like you have plans to keep working on this project, which is the main goal of game jams, opinion: to help you come up with ideas for projects that you'd like to keep working on (albeit sometimes stressfully due to time constraints), so I hope that you stick with it and make something awesome, cause you've got a good skeleton here!