Great atmosphere! Definitely nailed the cosmic horror.
The darkness, fog and choir music is all very effective, and the movement felt very nice.
I felt a little lost at first, and I never quite figured out how the falling floor worked.
I think I was missing the little cubicles with the amulets inside one my first couple of goes.
But once I found the first, and guess that the environment was looping, and I could probably find them in a cross formation, I did pretty well. By good fortune I stumbled across the monument not soon after.
The main issue for me which took some getting used to was the enemy animations.
They could still be executing an attack even when it looks like they're reeling or even dead.
But I like that you had to balance avoiding them and confronting them to maintain your movement bar.
There are other QOL things like in-game prompts, context and maybe a restart button.
(I got trapped in a nook after some wall fell in my first video).
But all in all great entry!
Here's my recordings: Endless Dawn pt1 by Z Soft Games
If the UI looks too big, that's because I squashed the window to lower the recording file size.