I like the idea and the graphics/assets but i just can't finish it... It's running at about 20 fps for me and the movement of the mouse is very unresponsive at such low fps... Maybe a settings menu where we could lower the graphics could help? Also, it seems kind of dry without any sounds. At least some night ambience would add a lot! Checkpoints would help a lot too! I think if this got a bit more polish it would be a very enjoyable experience!

The graphics look really stunning and the alien arm with the moon is really cool, but sadly I get the message that video memory has been exhausted in my potato laptop.  I would make the invisible walkways a big larger since it is in first person and you don't really see the exact spot where you step.

It is quite an interesting mechanic for a game :0, also the assets you made look good.