Bazooka has no combo as far as i can tell, but they tend to be more powerful and accurate than other weapons in the same tier, so you can just snipe-and-roll your way to (a slow and agonizing) victory. Gunslashes can be used as AOE ranged weapons, but only if you lock on -- if you attack without holding L they turn into sabers! Pretty groovy. Also, pretty sure Cannons are AOE.
I geuss cannons have a linear pierce. I can't really tell whether the Gunblade L attack is a conic AoE or just two projectiles fired at angles, though.
Accessing the item menu is a little painful and palette of six makes me sad. Heavy, Roll, Normal / Heal Trap, ? Trap, Star/Moon Atomizer (HOW ABOUT HEALING YOURSELF SARISSA JESUS FUCK L2P). Idly considering switching from RAcast to RAcaseal due to 10 heal trap limit instead of 10 fire (wut) trap limit. Too lazy to replay 20 levels, though.
Useful info:
Max stats for different class/race combos.There is also mag information, which I can't presently link, because the site went unresponsive for me. I wonder which photon blasts are actually good, this time around. IIRC, in PSO, the linear attack hit hard, but the PBAoE one didn't do much.