The creepy sci-fi-horror atmosphere was so good.
The way you rotate the sprites looked a bit odd. Like Paper Mario. Maybe flip them instead?
I like how you placed crawlers to create jump scares. I didn't like how they sometime happened to be sitting at the top of a ladder, so I immediately died.
I'll be honest, I'm not very good at this game. I'm glad you put a boss mid-way, because I'm probably never going to reach the final boss.
Overall, very engaging game. It had that "one more try" feeling.