Nope, I know of that game, but haven't played it for more than a moment.

Impossible Creatures?

Never heard of this one, though it looks interesting.

Maybe I need to come up with some hints.

edit:
They have a pretty distinctive squeal when you approach near enough to upset them.

edit:
Maybe I should've drawn a lurker instead.

edit:
Or a scavenger? Or Sentenza?

For some reason, Morrowind comes to mind. I'm most likely wrong, though.

I KNEW that it looks familiar! I should have guessed straight away... Well it's a field raider and we are talking about Gothic...

Wow, that thing was in Gothic? I had no idea. I should definitely replay those games sometime.

Gothic 2 AFAIR. And HERE you can listen to its "pretty distinctive squeal" as grimwerk described it

Huh, kinda rings a bell. I remember scavengers and lurkers much more clearly though.

Thanks for the rescue, Ghorpm. I was getting ready to abandon the image. Your turn.

Badly drawn in paint but if you know the game you should recognize it immediately

Nobody? It was developed by Strategic Simulations. And another thing: what I tried to draw there is really happening in the game. And yes, it is the main character, not some NPC.

I've no idea. :p

Come on! Just how many games which makes you gradually turn into an insect do we have? ;)

It's from 1995

Entomorph: The Plague of the Darkfall?

At first I would have guessed Evolva, but that does not match the other criteria.