Graphics: 3 - Though I agree with some other comments here regarding visual contrast, the presentation itself is nice. It's got a fun 'RTP, but as a sidescroller' aesthetic and I found myself liking the look. I also liked the expressiveness of the characters.
Sound: 3 - I liked the music, and the sound meshed well with action use! The Marsha death cry is super goofy, though.
Story: 3 - As another person said, this feels and plays out a lot like a teen romcon with an extra helping of gay. I found the dialogue between Harold and Marsha fun, though as the cast gets large and it's hard to feel out or care much about the rest of them. In spite of Harold and his love interest being the focus, Marsha and her love interest were much more fun together. Also if I didn't see him while collecting artifacts in the last areas, I woulda thought Lucius died as he kinda just never appears again in a story scene after being pulled into the warp. The whole thing feels a bit immature, but it's not necessarily a bad thing.
As a general aside, the antagonist's past, motivation and dimension jumping abilities remind me a ton of a certain character from Limbus Company. This might not be intentional, you might have never played it, but it amused me personally.
Comedy: 3 - It was rather amusing, mostly closer to the beginning of the game when it's just Harold and Marsha. After the main plot starts it gets rather dry, although Marsha and her waifu were funny.
Gameplay: 3 - I'm not going to be as harsh on this as the others. I thought the game was pretty fun and I did clear it getting all the collectibles, though I didn't bother with the speed clears. I DO think the slash jump mechanic, which I have seen before in other games done well, was quite fickle. Adding some lift on the jump is definitely advisable, as well as improving the hitboxes; some of the issues are definitely caused by the lack of mobility in the air, too.
I don't recall if one was suggested, but a controller is basically required, so I feel sorry for anyone who didn't use one, especially for the few instances that require the slash jump into marsha float combo. This sort of technique, which is basically a Celeste-tier technique, is only required a couple times, so dying 30+ times (if not more) before succeeding is not just plausible but likely. Cleaning up the jump lag and slash jump would make it more fun to do too; instead it's pretty frustrating.
Overall: 3 - I liked it! But getting to the elephant in the room...
There's no way that a first time clear, especially if you bother to grab any collectibles, will be less than an hour. I'm sure it can be done; I'm going to assume that the speed clear times are more than possible. but a part of speed running is learning to play the game at all, and people playing your jam game will not realize that it's actually reasonably challenging before getting stuck and giving up when the hour mark is over. I admit that I did go beyond that point and commented on stuff that happens after I went over an hour in my review because I took a liking to it and wanted to see where it ended up. But yeah.
Either way, I respect the amount of effort! I had some fun.