I was going to open my new account with five images. Having not finished the other four and figuring this'd be the best out of them anyway, I'm just gonna post this for now. As for the picture itself:
In typical RPG fashion, I've given it a blatantly obvious weak spot with thin dark gas leaking from it. Beneath that is a lantern, because...because. It's got a crab arm and a human arm encased in slime or melted who-knows. It's got five insect legs and a scorpion tail on its back. Protruding from near the head is a segmented skeletal arm holding a dreamcatcher. Also to note are its horn with its 3 circling circles and tentacles near its elbow pad. Since it's an arachnid, it has 8 eyes and a fang on either side of its mouth.
So...guess that's it.