Here is the full list of all 35 I Am Bread trophies - there are 20 bronze, 9 silver, 5 gold and 1 platinum.
Obtain all other Trophies
A++ all Cheese Hunt levels
Complete all Cheese Hunt Levels
Finish a Cheese Hunt level with 100% integrity
Get an A++ on a Cheese Hunt level
A++ all Bagel races
Complete all Bagel Levels
A++ all Zero G levels
Complete all Zero G Levels
Finish a Zero G level using less than 100 fuel
Get an A++ on a Zero Gravity level
Complete all Rampage Levels
A++ all Rampage levels
Start the car
Get an A++ on a Rampage level
Complete all Story Levels (Before Epilogue)
A++ all Story levels
Stay airborne for over 5 seconds on any mode except Zero Gravity
Climb atop the Garbage Truck on Story Mode
Use more than one heat source to toast yourself in a single Story run.
Start the Lawnmower
Start the Chainsaw
Get an A++ on a Bagel Race level
Launch the Rocket
Use the Hairdryer
Break the TV
Stand upright on the skateboard and ride it for 1m or more as the Wholemeal bread
Completely cover yourself in butter and get toasted!
Finish a Story level with exactly 1% edibility
Get an A++ on a Story level
Finish a Story level with 100% edibility. No Marmalade allowed.
Finish a Story level with both sides covered in jam (jelly)
Finish a Story level using Magic Marmalade
Spill the salt
Become inedible.