It's fine, there's things to like about it but I don't think it's for me. It's kinda just a slower and more frustrating take on 2D Mario. This also might be an unfair comparison since there's a huge leap in hardware between the two, but going from Wario Land 4 to this felt super jarring, Wario is so slow here. His fat German ass won't H-H-H-HURRY THE FUCK UP! His jump also feels too floaty and a tad inconsistent at times. I've tended to notice that this is an issue I have with a lot of 8-bit games I've played as of late, and I'm not sure if it's an input delay issue from playing the games through emulators on displays they weren't meant for, or if I'm just bad. Maybe it's a mix of both.
I didn't get all the treasures, and because you lose all of your coins upon death (which is the most demoralizing shit in the world btw), in combination with me having the worst gambling luck imaginable, I got a shitty ending. Maybe I'll replay the game some day and get everything but I don't feel super motivated to do that right now. I'm gonna try and get a Virtual Boy emulator working so I can play the Virtual Boy game but if that doesn't work out then I'll just move on to Wario Land 2.