What a strange and ambitious game. I'm not going to pretend I understand what you wrote about forcing web tech into game dev as I'm sure it's way above my head so I'll just talk about the game!
So it's really confusing at first cos you just start behind this weird inter dimensional portal/being thing and instantly get to upgrade a bunch which is pretty cool cos you get to design a starter build basically.
The movement is SUPER confusing. It seems to be influenced by your relative direction with the mouse cursor which then affects how you move with WASD... Even then it felt odd as if there was some sort of tether pulling me in another direction.
The enemies didn't seem to spawn unless I ran out into the wilderness to find them or maybe I was just too impatient waiting for them to find me.
I made it to 34 enemies killed on my best attempt. I really like the eldritch vibes but the background just being the same repeating pattern really messed with my eyes and sense of direction/location so I had to call it quits after that run.
Would be nice to see where you take it as there's a nice foundation here for a rogue-like/survivor-like game.