Just killed cat lord while slowed and without see invisible. I got 3,5 million of experience for him. I believe that something has to change.... I do realize that he is one of the toughest enemies in the game but he is not worth 3,5 million of experience for the level of danger he poses. The basic problem with cat lord is that the player can easily lure him out of his level and then use teleportation to deal with him. I have a simple suggestions how to rebalance him (one of these should do the trick).

a/ make player unable to leave cat lord level until he kills him.
b/ make cat lord stay on the level and do not follow the player + make the stairs change locations once entering his level - similar solution to how it works in the pyramid.

Solution a is more extreme. Solution b is a little more balanced. Otherwise - give him HP regeneration so that the player cannot teleport and slowly take him down from the distance... or at least tone down experience for him.

I understand excessive experience for water dragon as water dragon can instakill level 50 character from a distance with 600 HP criticals but catlord is much easier enemy to deal with...