One Warrior in the front of Kurinnaxx. The Second Warrior on his left, and the Third Warrior on his right-- by the ribs. Kurinnaxx makes sand traps that drops chance to hit by 75% and causes plenty of damage. The sand trap also silences casters for around 9 seconds -- so stay out of range if by any chance someone gets aggro away from the tank. Move away as fast as you can before you get silenced by his trap. Rogues, watch how many debuffs are stacked on you, and use your Metin2 Yang, and stay away. Anyone that gets 75% chance to hit, is useless anyway, so stay away so that you do not get damage. That will allow healers to conserve mana.
I cant remember if it was poison or disease off hand but we didnt have any problems curing it.
The red wasps treat as surgers in Molten Core. They use random secondary targeting and charge someone in the raid doing 1K damage on the charge, then snap back onto the tank.