Approaching the lair will trigger an Achievements unlock. (Not implemented yet)
In order to get to Festitt you must first jump seven pieces of ruins to get to his entrance. Make sure you take your time carefully jumping each bit. Try having a running start each time. Once you reach the sixth ruin piece, do a high jump onto the high wall before you attempt the last ruin.
Approximate Location: 36k, 6k
Killing Festitt drops level 36 blue chests:
|Warrior Priest||Bright Wizard||Knight of the Blazing Sun||Witch Hunter|
|Archmage||Shadow Warrior||Swordmaster||White Lion|
|Shaman||Squig Herder||Black Orc||Choppa|
|Disciple of Khaine||Sorcerer||Blackguard||Witch Elf|