Here is the full list of all 58 Saturday Morning RPG trophies - there are 52 bronze, 3 silver, 2 gold and 1 platinum.
Complete 5 different episodes
Defeat the Trash Monster
Save Ben from the trash compactor
Get Todd and Mary back together
Defeat the Lizard King
Complete 4 different episodes
Beat an entire episode without dying
Win 100 battles
Use the decoder ring
Crane kick Billy
Win a battle against the Frizzies
Score 200 Righteous Defenses
Stop the HOOD forces in Shadow Valley
Defeat Super Computah
Reach Level 11
Max out your multiplier
Scratch all five stickers before battle
Win 50 battles
Hook Sarah up with Matt Conroy
Walk away from the Bertha fight
Complete 2 different episodes
Don't destroy the gruel in Episode 2
Get a righteous rating on a weapon slider 10 times
Retry a fight and win
Get a battle rank of A or higher five different times
Defeat an enemy with a critical punch
Collect dinner for a friend
Unlock all other trophies
Win 150 battles
Win 225 battles
Reach Level 21
Reach Level 50
Collect all 128 Scratch N' Sniff Stickers
Get a triple S ranking in battle
Destroy the gruel in Episode 2
Win a fight without scratching any stickers
Play an episode twice
Decide to fight Bertha for Bobby Jett
Buy Henry's ticket for Ash
Hire Charles Cheezer to "talk" to Henry
You called Jenny for a good time
Hook Sarah up with Randy Greenback
Hook Sarah up with the Basketball Team
Hook Sarah up with Chris Rock
Force Blake to go on a date with Sarah
Defeat Evil Marty
Defeat Wave 5 of Endless Battle
Defeat Wave 10 of Endless Battle
Defeat Wave 15 of Endless Battle
Win an arena battle
Shoot your eye out with the BB Gun
Compact Ben in the trash compactor
Defeat Adrian the cyberdaemon, lord of pizza
Use the safety scissors to pull an enemy across a bomb
Make Kev the robot band frontman
Make Chris the robot band frontrock
Make Bearris the robot band frontman
Make Captain Crunch the robot band frontman