Re: battle.
Aracely and TJ are being sent to the community centre. Ianto will head that way too so he has a safe-ish place to try to coordinate groups.
Remy will head down underwater with his trident to beat the hell out of some merpeople-sirens. He'll try to keep in touch with any of the others who do the same and use his shields for protection as well as summoning a few water elementals and just various stuff what the trident does.
616 Sam will send Redwing up to see what's happening while he helps supervise evacuation to the community centre. Once that's done he'll head back out as air combat support and probably yell at people to move them around (on a smaller scale, like "head over to that rock formation" not "we need you two miles north")
Melissa, 616 Ororo and America will take to the skies. Melissa and America are more fighting - America punching shit and occasionally using well-timed portals to move things out of the way and Melissa using her sonic powers. Ororo will try to manipulate the environment to the defenders' advantage, keep the upper city not flooded, etc.
Maya is out on the beach with her staff and a handgun. Mostly fighting melee style but she's got the gun if she gets pinned somewhere or if anyone else needs it.
Elsa is out there blowing shit up. She has both her big guns and she's fashioned some crude explosives, because what else are you doing with your time on a cruise ship full of random stuff if you're not seeing how many bombs you can make? For those who've never seen her in a fight, she is extremely acrobatic, she's the character type to do things like shoot shit while upside down mid-flip and then kick you in the face on the way down. In heels.
Laura is, you know, Laura. Everyone knows what Wolverines do in fights. (Not real wolverines, Jonathon is safe elsewhere.)
AU Sam. Okay. Sorry to say to the other fliers, he has not been very helpful during the scouting. Group work really is not one of his strengths. He doesn't always communicate, when he does it's occasionally not even in English, sometimes he'll just wander off because he thought of something else that he thinks needs doing and then forgets he was supposed to be doing something else in the first place. So any of the scouts, feel free to be annoyed about this.
During the actual fighting he's pretty elusive, he has his stealth tech engaged and he's mostly doing his own stuff with his sniper rifle, but every so often if one of his particular friends is in a tough spot they'll suddenly have this person-sized missile zoom in out of nowhere and just be like... this incredibly efficient fury of blades and kicking things and everything suddenly is on the ground bleeding to death and he's just flown off again. It's a thing. He's going to end up covered in other people's blood.
He may, similarly, appear out of nowhere to silently patch up wounds if necessarily.