That creature reminds me of the dust bunnies in Money Town. Ironically, the dust in that game is also gray, the only difference is that this creature "removes" the dust whereas those ones "added" dust.
Oh, and I have a fear of spiders, so seeing them scattered all over the map was rather frightening. ;-)

Once I figured out what I actually had to do (And avoided the creatures :P), I enjoyed it. Well done :)

This is pretty hard. No way to defend yourself that I could find, and I kept getting stuck on walls (being able to slide along them would be a huge improvement). Tried both sneaking around and running for it, and always ended up getting stuck, trapped or ambushed. It's pretty offputting how you lose all progress if they so much as touch you.

Nice, but hard.
It would help tremendously if you wouldn't get stuck at walls but slide along. Right now if you encounter a bug you too often get killed while getting stuck at an edge.

I agree with many of the comments below about this game being difficult; the wall stickyness, the creatures speed, and the difficulty of moving those in your way. Maybe some traps to lead these creatures into would give the player an extra mini-objective, and help dispose of some of the more troublesome creatures. I did really like the multiple levels of visibility in the "fog of war". Nice cautious discovery.

Good game but is quite hard and a bit repetitive.

I really liked the fog of war, but as others have noted I found the stickiness of the walls a little awkward.