Played through the whole thing and it was a fun experience. I did have somethings that I noticed was off for me, Hexacut is hella-op and the bosses are quite easy, one-shotted the first & second boss, two-shotted the third (then died from a catnip rage lmao), one shotted ghost cat, and death didn't do much either, 4-shotted. Mythril collar didn't give me my defense, and I think the fishes were too much of a power boost, especially if it only costed 90 in the shop. Stats were hella boosted in the end. However in the end, the artstyle, music, and the RPG entertainment just made it perfect to play through those worries. Ending was also pretty cute.
Also side note, are the colors and design perhaps inspired from Hades? That's a nice inspiration if it was.