From Hack/Mine Wiki
Scorpions are quite common creatures, but beware; these over-sized arachnids are not to be taken lightly, adventurer.
- Scorpions are similar to cave spiders in that they inflict poison upon attack, unleashing venom into your blood stream, and damaging you over time! Unlike their cave spider counterparts, however, their venom has been known to kill. At higher levels, the venom can kill the player in only a few seconds, even after the scorpion has been slain.