I managed to reach the infinity corridor puzzle but it doesn't make sense to me so I gave up after trying for a few minutes. Not sure what the logic is, but I couldn't figure it out :D Up until that point I found 2 of the secret rooms.
The presentation is very clean, the artstyle effective, movement is pretty smooth. I didn't get a feel for some of the theme implementations because I didn't reach far enough (judging by the screenshots and text) so I can't comment on those. Music and audio is nice, not much to comment on honestly. I played the webGL on PC, but I'm assuming it's very mobile friendly as well, so kudos for supporting that!
Small nitpick: It only features turning, not strafing. I like strafing so I missed that. And apparently Q works for turning but E doesn't so that threw me off lol.
Overall, while the game didn't hook me, it's still a decent entry. Good job!