I love the atmosphere, and the character design. I wasn't able to get very far, but I'm interested in the creepy world. It reminds me of playing Axiom Verge.
My biggest gripe is the jump arc. There are so many ceiling spikes and spiky blob monsters. I found myself really wanting control over how high I jumped. I wanted to tap the button for a little hop, but instead the character rocketed into the ceiling, then bounced down into an enemy.
I'm planning to come back to this one when I have more time, so congratulations on a compelling opening!