Here is the full list of all 50 Senran Kagura Peach Beach Splash trophies - there are 39 bronze, 8 silver, 2 gold and 1 platinum.
Obtained all trophies.
Defeated 100 playable opponents with melee attacks. *inc. Multiplayer
Defeated 100 playable opponents with skills. *inc. Multiplayer
Achieved Soaking Power-Up State 100 times. *inc. Multiplayer
Defeated 100 playable opponents with a pet. *inc. Multiplayer
Watched all Squirmy Finishes.
Raised 30 skills to MAX level.
Raised 10 characters to MAX level.
Cleared the 4th league in the V Road Challenge.
Raised 10 skills to MAX level.
Raised the Rocket Launcher to MAX level.
Raised the Grenade Launcher to MAX level.
Raised the Sniper Rifle to MAX level.
Raised the Handgun to MAX level.
Raised 5 skills to MAX level.
Raised the Dual Handguns to MAX level.
Raised the Assault Rifle to MAX level.
Raised 5 characters to MAX level.
Raised the Spray Gun to MAX level.
Achieved Soaking Power-Up State 50 times. *inc. Multiplayer
Raised the Shower Gun to MAX level.
Raised the Minigun to MAX level.
Collected 1,000 total Skill Cards.
Cleared the 3rd league in the V Road Challenge.
Raised 1 character to MAX level.
Raised the Shotgun to MAX level.
Collected 750 total Skill Cards.
Raised 5 pets to MAX level.
Raised 3 pets to MAX level.
Defeated 100 playable opponents with the Water Gun. *inc. Multiplayer
Raised 1 pet to MAX level.
Collected 500 total Skill Cards.
Watched reactions for 10 characters in the Dressing Room.
Watched reactions for 5 characters in the Dressing Room.
Completed the Final Splash Chapter.
Achieved Soaking Power-Up State 10 times. *inc. Multiplayer
Completed the Homura's Crimson Squad Chapter.
Completed the Hebijo Clandestine Girls' Academy Chapter.
Completed the Gessen Girls' Academy Chapter.
Opened 50 Card Packs.
Collected 250 total Skill Cards.
Cleared the 2nd league in the V Road Challenge.
Opened 25 Card Packs.
Completed the Hanzo National Academy Chapter.
Performed Ally Revival 10 times. *inc. Multiplayer
Played Water Gun Mode in the Dressing Room.
Played Touch Mode in the Dressing Room.
Cleared the 1st league in the V Road Challenge.
Watched 3 Squirmy Finishes.
Cleared the tutorial.