It seems that the Hydra doesn't vary in a random level but instead has levels of (11, 22, 33, ? , 55) I have seen all of those written levels, most likely;
When you play solo in the dungeon and you find one hydra in the room it is mostly 33 or 55. And in a room with two other monsters he's 11 or 22.
Because it has two identically heads, there are also two of the same numbers in their combat level... kinda ironic.
188.8.131.52 14:55, April 30, 2010 (UTC)Scyther