I'm liking it! Combat is solid, but I really don't like the constant slow motion on hit. I feel the player's attacks have a bit too much cool down, it makes the combat feel a little sluggish, especially when multiple enemies are around. All the different moves protag has are cool. I like the way the enemies behave, jumping around and dodging the player. The flying enemies weren't too fun to fight for me. The mosquito always hit me after I hit it, unless I spaced my attack perfectly. The flying squid thing flies in out of nowhere with no telegraph at all. Samurai can just be jumped over and ignored if his death doesn't open a door.
I like the look of the world. Good colors, good tilesets. Music would really help make it super moody, and could also be an indicator for the different sections of the world. Everything is kinda intertwined and I'm not sure how I would describe different sections to my friends. "Pipe world", "white block waterfall place", "underground." I felt most of the messages the player could read are kinda pointless, like "o no the ground is wet my socks are gonna get wet : (." They don't really reveal too much character or lore or anything, and its kind of a weird comment to make after killing a bunch of weird pink robo samurais and orange mutant things. The mushroom drug effect was kinda annoying and felt totally pointless, but maybe you'll make use of it later. Watching protag die takes two times as long as it should. No idea what picking up the orbs does, but of course I picked them up!
There's a few parts of the game where dying means walking 5 minutes back to where I was. Checkpoints Dark Souls style are probably the way to go, but I do think having only shortcuts would be cool if you can pull it off.
Tiny thing: protag's roll has that smear effect, which looks cool, but its not used anywhere else in the game, which feels a little weird. Attacking through walls lets you kill a few of the enemies and cheese some fights.
A settings menu is probably gonna have to be the way to go. Having no way to pause the game is pretty weird. Editing a text file isn't something most people are gonna want to do.
All in all, really good!!! It's a good looking, enjoyable experience, with a good amount of challenge. I'd love to hear some music in the game!!