Cool little metroid adventure you got here! Got quite addicted to finding all the various tools and weaving my way through nuns by climbing around on cupboards: really captured that 'Home Alone' vibe of being a little kid avoiding scary adults!
Really shocked me with the amount of depth the game has in terms of endings: I beat it the first time with the bad ending but couldn't see how the game could be anything but that, but then ended up getting the good ending after realizing how many other tools and routes there were to find! Also thought it was great that the routes all led to big moments, like terrorizing the nuns or having a huge boss fight. Really cool stuff and I can't believe there's even more potential endings I could get beyond those two!
It had a few rough spots here and there but nothing too major: if you stop crawling through a gap it should keep you in crawl mode instead of standing you up and glitching into the geometry, and speaking of crawling, I would've loved the ability to peek downwards if I crawl as there were a few times I jumped and ended up getting hit by something I couldn't see below. Also the game could be a bit plain when it comes to special effects: having the same death animation for everything, certain actions not having any sounds or particles, that kind of stuff.