An extremely impressive effort for a solo developer, mashing up first-person puzzlers, Metroidvanias, and a dash of Zelda and collectathon platformers. Lots of clever environmental puzzles that are well-integrated into the exploration, and lots of rewards for carefully exploring nooks and crannies. that said, it does start to overstay its welcome before the end, and it very much suffers from a lack of design polish: the map is an optional collectible you don't get until quite far into the game and is the top-down 2D kind, which is definitely not adequate for finding your way around this kind of dense, interconnected, and heavily vertical world; while many of the puzzles are very satisfying to solve, others lack sufficient visual or auditory feedback about what a given switch does or what exactly your objective is; and the combat is generally awful and mainly serves to get in the way of the exploration and puzzle-solving (most action-adventure games have the sense to maintain a decent degree of separation between combat and puzzle areas so that enemies don't interrupt you while you're trying to solve a puzzle, but sadly not this one). Will give Six Inches Under a try at some point now that it's on Game Pass; hopefully, it sands down some of the original's rough edges a bit.