Here is the full list of all 12 Zippy the Circle (Level 3C and Level 4C) (EU) trophies - there are 11 gold and 1 platinum.
You got all the trophies! Congratulations!
Fly through at least 1 ring in level 3
Fly through at least 2 rings in level 3
Fly through at least 4 rings in level 3
Fly through at least 6 rings in level 3
Fly through at least 8 rings in level 3
Fly through at least 10 rings in level 3
Fly through at least 12 rings in level 3
Fly through at least 14 rings in level 3
Get the medal for level 3
Find the key in level 4
Get the medal for level 4