for me it was this roach, i think it was named gregor.. that ****ed healing was so annoying.. i needed 6 tries for that..
some think that the hydra is quite hard, but i found a way (as a biologist class) to beat it:
the only thing that you need is the poison spell (anesthetic) over the toxicant form skill (i think it works with all poison skills, but i beated(??) this with that one).. the fire-head hydras on the sides (forgot the name) seems to be very vulnerable to poison so they dont have to be a problem..
if they die, the middle one starts stunning and, with less luck, they dont stun you.. only thing left to do is (guess what?) attacking with all you have..
[How To Beat Hydra In Less Than 2 Minutes] thank you :D
Greetz, Me