I have some suggestions: Let the player know what time is needed for a rank. Add an in game timer per level. (Can be toggled on/off) Remove "SUPER F", or change it to take 10 minutes to beat a single level. (My main concern with SUPER F, apart from not knowing what time you need for it, is that if you get any rank above F, can you then get F rank after? Probably not....

TSN seems to have a lot of glitches, unfortunately I'm not omnipotent and I don't know what most of them are, so if you find a bug or glitch post it here and I'll try my best to fix it :)

Is something supposed to happen after beating the general, because after he splits in half and the darkness goes away you are left with nothing, just a dead end. After multiple attempts, and new playthroughs it is the same.

Advanced Weaponry - Pick Up a Primary Weapon wont unlock no matter what weapon is picked up

Hey Dev, do you happen to run a discord community (or even have discord)? I would love to help you create a discord behind this game! Let's get together and make something great.