Here is the full list of all 24 Deformers trophies - there are 4 bronze, 12 silver, 7 gold and 1 platinum.
Collect all trophies
Reach Gold ranking in Prestige
Reach Level 20
Reach Silver ranking in Prestige
Consume 5000 pieces of debris (including gibs)
Reach Level 10
Break 100 stacks
Get 500 Kills
Score 50 goals in Form Ball
Score 25 goals in Form Ball
Get 250 Kills
Get 15 Assists in Form Ball
Earn your first Prestige rank
Level up!
Get 10 Saves in Form Ball
Complete a match online in Splitscreen
Score a Hat Trick in Form Ball
Score a goal in Form Ball
Kill an enemy using the pit in the center of Big Top
Get 100 Kills
Get 50 Kills
Get 5 kills with a single Rampage
Kill an enemy while you're cloaked
Complete an online match