I always try this: I just walk in, say BOO!! and they all run away like a bunch of cowards.. Works everytime !!

No seriously: Mindflayers are irritating little bastards. Their psionic blasts confuses their opponents. You just need to dispel magic, and hack 'em!!
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I am committed to restore your faith in extreme violence...
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Overlord Executioner, Slayer of Fluffed Beings
Member of Clan HADB
Supreme Warrior of Myst
Official Entertainer in Cloudy's Cafe