Played FFXII again after not playing for a good while. Got back into the swing of things very quickly.
Made my way to King Raithwall's tomb, tried to fight the very first demon wall but failed terribly and ended up in a fight with the non-optional demon wall with a crap ton of debuffs and low health. Fortunately that wall is like fighting a normal enemy only with 11K health. Nice and easy for my relatively under leveled party. Back tracked and proceeded to grind some gil for Reflect and Aero on all my party members and grinded some LP. Taught Vaan, Basch and Fran their first two Quickenings and decided it was time to fight the optional Demon Wall. Chained about 10 quickenings leaving the wall with about 7000 health left. Switched to my Reflect, Aero party members and proceeded to spam Aero everywhere. After a few seconds the wall came down and I got the ability to access the hidden section of the tomb. A few restarts later if the hidden chest didn't contain Demonblade and i've got my hands on the strongest weapon I can access at this point in the game.
Hope the enemies in the tomb can tank 59 Attack Power as well as Vaan's current Strength stat of 34 (Level 17).