Dynamic Duo Trophy | Resident Evil: Revelations

You must clear Episodes 1-3 in to play Raid mode as the game will tell you to go to Campaign before playing.

Play the first level then kill one of the monsters, then use the grenade to stun the other monster, both you and your partner must attack at the same time.

This is also the only online trophy to worry about.

【RAID MODE】Land a fully charged physical attack on an enemy at the same time as your partner.