Here is the full list of all 12 Puzzlegeddon trophies - there are 7 bronze, 4 silver and 1 gold.
Use a Missile Boost on an attack less than one second before it’s hit by an Anti-Missile
Give Ralph a big owie
Finish first in a round of Battle Royale with the shield still intact
Respawn into a missile and die
Finish first in a complete Multiplayer match of at least 3 rounds of Battle Royale
Use a Wormhole Disrupt to block a foe’s Monster Attack within a second of it launching at you
Reflect the same missile twice
Defeat a total of 100 foes in Multiplayer
Defeat a total of 50 Hard Bots when playing as the Robot Factory
Defeat a total of 50 opponents after you have been killed
Accumulate 150 Dead Puzzler’s points ten times, in Multiplayer Battle Royales
Clear the final level of Poison Peril