Since i don’t know his team’s moveset and he want to challange the devs hard difficulty without healing also i can’t rate his team, i hope someone can rate it.
Kyogre (Blue orb)
Giratina (Crystal piece)
Groudon (Red orb)
Arceus (Crystal piece)
Rayquaza (That thing that heal you based from the damage that you dealing
Regigigas (Crystal piece)
They all max level except for regigigas which is underlevel (101 or something). He a brute force type of guy so he only use damage dealing move on every single of his mons.