Very cute little platformer, starts off incredibly easy, with a limited move set and quite simple levels and puzzles, but develops into something much more interesting and complex, if frustrating at times.
This really shines in it's bonus levels which are, sadly, locked behind secret collectables in the main game, but it's so little you're near enough guaranteed to have enough as long as you aren't blitzing through the levels. They are a lot faster paced and make full use of the entire games arsenal, in fact, the first is one of my favourite levels in the entire game just because of the effort put into designing a really engaging while challenging level on such a small moveset.
Arguably, the biggest issue the game has is it's main gimmick in the hammer, while it is cool and works throughout the majority of the game, fast paced sections requiring precise throws just aren't fun and they can happen a fair amount.
Still, worth giving a shot if you're into platformers and the concept looks fun; I enjoyed my time with it, although, admittedly, the games it takes inspiration from, celeste most notably, are some of my favourites.