Here is the full list of all 28 The Perplexing Orb 2 trophies - there are 12 bronze, 8 silver, 7 gold and 1 platinum.
Collect all trophies in The Perplexing Orb 2.
Knock down 1 Finish Post.
Knock down 5 Finish Posts.
Knock down 10 Finish Posts.
Knock down 15 Finish Posts.
Knock down 20 Finish Posts.
Knock down 25 Finish Posts.
Knock down 30 Finish Posts.
Knock down 40 Finish Posts.
Knock down 50 Finish Posts.
Knock down 60 Finish Posts.
Complete the Final Stage.
Collect 1 Artifact Token.
Collect 5 Artifact Tokens.
Collect 10 Artifact Tokens.
Collect 15 Artifact Tokens.
Collect 20 Artifact Tokens.
Collect 25 Artifact Tokens.
Collect 30 Artifact Tokens.
Collect 35 Artifact Tokens.
Collect 40 Artifact Tokens.
Collect 50 Artifact Tokens.
Collect 55 Artifact Tokens.
Learn to Shrink on Stage 4 and then enter the maze on that Stage.
Learn to ride magnets on Stage 21 and ride across the gap in that Stage.
Die and complete the Game Over Stage.
Complete Stage 10 without falling. (Knock down Finish Post with Full Health).
Complete Stage 48 without falling. (Knock down Finish Post with Full Health).