1. Could someone help me?

1. Go to the center of the tomb and fly and just wait

2. Take away hariyama and add a regi of your choice same with manetric

3. Add a kyogre instead of metagross

1:Go exactly in the middle of the cave and use fly and the door will open.

2:Excellent team!

3:Depending if they are all on high levels,yes!Just delete the move pursuit which Metagross has a replace it with something good!

1: Use fly in the center of the first chamber.

2: Swampert: remove*
Flygon: teach crunch, dragonbreath, flamethrower, and fly
Walrein: remove*
Hariyama: remove*
Kyogre: give shell bell, delete water spout and hydro pump for surf and thunderbolt/thunder and swap double-edge for body slam or some other non-recoil move
Manectric: give leftovers, remove flash and spark for moves that do damage and are non-electric

3: Latias would be best knowing earthquake, thunderbolt, dragonbreath and recover or fly, surf, dragonbreath and recover and a better item would be a lum berry. Replace on of the above creatures with a sableye, give it a shell bell, and teach it brick break, shadow ball (learned naturally), faint attack (if it tries to learn a better dark move teach it that instead) and night shade. Finally replace the other with a kadabra, give it a lum berry, and teach it shadow ball, thunderbolt, psychic, and recover.

*Induct your battle tower team into your party instead of these pokemon, although you can still use them for the battle tower

Do what it says. Fly out the center of the tomb and wait. Just don't be so stupid as to do it "with love and mushy mushy crappy care" and such.

No. Some of them have more then one move of the same type. I taught my Mewtwo something more formidible, with Ice Beam, Thunderbolt, Psychic, and Recover.

No again. This time it's because of lack or cooperation between the held item and the moves the Pokemon knows. There is no strategy.

Someone has answered your questions please!

1. Go into the middle of the room and use fly and a cave will open in the brail

2. Yes

3. Instead of Metagross use your Kyogre

1) Go to the center of the room and use fly.

2) Your team looks good. Though I'm bad at rating, I'll give it a 9.

3) Is your Battle Tower team at 100 too, Metagross-forget pursuit and teach it something else, Latias-forget mist ball and teach it thunder or something.