Giant spider

Giant Spiders typically appear in small numbers, but have been known to gather into larger groups for ambushes where their numbers are higher. Their primary ability allows them to throw their webbing, causing the victim to become encased and immobilized unless he passes a resistance check. They can also use the Overwhelm ability, wherewith the spider tackles its victim, repeatedly inflicting physical damage and stunning the target for the remainder of the attack.

Note: Both their Web and Overwhelm abilities are quite hard to resist, particularly the latter which keeps your character knocked down and taking serious damage for a few seconds (while still being vulnerable to damage from other sources). Although Spiders use their abilities relatively rarely and chaotically, they sometimes happen to spontaneously chain them in a nasty way. Two inconspicious Spiders chaining two Overwhelms in a row with a Web in between can even kill a warrior in the lower levels, whilst not giving him a split second to do anything at all. Quicksave your game before going against these creepy-crawlies.