They hit for up to 149, and can dual wield. I found a log to give you an idea.
[Sat Apr 10 23:34:05 2004] A mephit lackey crushes a sentry of Ro for 24 points of damage. [Sat Apr 10 23:34:05 2004] A mephit lackey kicks a sentry of Ro for 28 points of damage. [Sat Apr 10 23:34:07 2004] A mephit lackey slashes a sentry of Ro for 149 points of damage. [Sat Apr 10 23:34:07 2004] A mephit lackey slashes a sentry of Ro for 116 points of damage. [Sat Apr 10 23:34:07 2004] A mephit lackey crushes a sentry of Ro for 70 points of damage. [Sat Apr 10 23:34:08 2004] A mephit lackey slashes a sentry of Ro for 76 points of damage. [Sat Apr 10 23:34:08 2004] A mephit lackey slashes a sentry of Ro for 96 points of damage. [Sat Apr 10 23:34:08 2004] A mephit lackey crushes a sentry of Ro for 149 points of damage. [Sat Apr 10 23:34:08 2004] A mephit lackey crushes a sentry of Ro for 70 points of damage. [Sat Apr 10 23:34:09 2004] A mephit lackey slashes a sentry of Ro for 149 points of damage. [Sat Apr 10 23:34:09 2004] A mephit lackey crushes a sentry of Ro for 142 points of damage. [Sat Apr 10 23:34:11 2004] A mephit lackey slashes a sentry of Ro for 109 points of damage. [Sat Apr 10 23:34:11 2004] A mephit lackey slashes a sentry of Ro for 136 points of damage. [Sat Apr 10 23:34:11 2004] A mephit lackey crushes a sentry of Ro for 149 points of damage. [Sat Apr 10 23:34:12 2004] A mephit lackey crushes a sentry of Ro for 123 points of damage. [Sat Apr 10 23:34:13 2004] A mephit lackey slashes a sentry of Ro for 149 points of damage. [Sat Apr 10 23:34:15 2004] A mephit lackey slashes a sentry of Ro for 149 points of damage. [Sat Apr 10 23:34:15 2004] A mephit lackey bashes a sentry of Ro for 18 points of damage. [Sat Apr 10 23:34:16 2004] A mephit lackey slashes a sentry of Ro for 149 points of damage. [Sat Apr 10 23:34:16 2004] A mephit lackey slashes a sentry of Ro for 149 points of damage. [Sat Apr 10 23:34:16 2004] A mephit lackey crushes a sentry of Ro for 149 points of damage.