Here is the full list of all 21 Flockers trophies - there are 5 bronze, 7 silver, 8 gold and 1 platinum.
Earn every trophy
Kill 500 zombie sheep
Blow up 999 sheep
Three star everything
Complete every level (including bonus levels)
Find and unlock all the secret bonus levels
Collect 30 golden fleeces
Save 100 sheep from fall damage by landing on something soft.
Try out 10 different styles of sheep (blood included)
Three star every level from the first theme.
Three star 2 boss levels.
Collect 20 golden fleeces.
Get 20 punk sheep moshing together.
Look at what you’ve hurt.
Get 20 sheep into the exit at once within 1 second
Have 20 sheep jump at the same time.
Complete any level with a customised sheep.
Unlock a secret level
Explode 2 sheep while they are in the air at the same time.
Complete the first 3 levels.
Get 4 sheep into the exit at once within 1 second.