Anyone who has already completed the mission before, will be teleported to Sealion's Den.
The fight is doable but still pretty difficult at level 65 with Trust. Easier at level 80+, trivial at Item Level.
Buffs are removed upon entry.
45 minute time limit.
Experience Points are not lost from KO.
Tractor is not allowed.
The battle is split into 3 parts: 5 Mammet-22 Zeta's, Omega, then Ultima.
Before each part, the party's HP and MP will be restored, but TP will be reset. The monsters will not attack as soon as they can, they will wait until a player character moves close enough or executes any action towards them.
Pet TP is not reset and deployed Automatons are not lost.