Getting Celine is super easy she will ask you to help her find treasure in a cave agree and find the ancient text then exit the cave and agree to have her join you permanently.
You don't need to activate any PA's she will come to you.
AS for the boss brutal you just need to kill one as soon as possible by breaking it's guard.....also bring more resurrection elixirs LOL!
Celine is an offence spell caster even if you don't want her to join you should still do the cave with her anyway for some nice equipment.
Lastly I didn't get to try it out but you can use special characters form other star ocaen fames to attack an enemy but you can't control them they are only used for frontal assault.
PS:Next time we meet up with a pretty awesome fighter and some bandits.
ONE MORE THING: The gargoyles are technically optional as long as you don't open that treasure chest you don't need to fight them LOL!
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