I Need Help On Xenosaga

18 should be more than enough, but I'm the kind of person who doesn't level unless I have to...

(Except for Shin Megami Tensei, I'm at level 103.)

No... I didn't mean the game had super-hard bosses. I mean, there are other bosses alot stronger and more frustrating than those in Cathedral Ship.

Enjoy finding your way around the Song of Nephilim.

Actually, I found the Song less annoying than the Cathedral ship. Mind you, I had overleveled Jr. and Chaos before then (they both have nice all enemy attacks)

KOSMOS is the best against Gnosis enemies,
Jr. against humans (though he's pretty good against anything)
Chaos against a group with different elemental weaknesses (due to his last ether spells)
Ziggy against machines
MOMO's the best healer (her attack in her normal form's almost useless)
Shion's more of a support character than outright attacker, though spell ray and her all lightning attack are quite useful. I transferred most of the healing ethers to her and KOSMOS, making a Shion, KOSMOS and Junior party quite deadly.

I also found Song to be quite easy. I've been playing it on and off lately, and am (I think) about halfway through Proto Merkabah.