Here is the full list of all 12 10 Second Ninja X trophies - there are 9 bronze, 2 silver and 1 gold.
Earn 300 stars & X rank all marathon modes
Complete Marathon Mode in every zone
Score 15,000 points playing TOTC
Won't somebody PLEASE think of the children!?!
Equip a new character skin
Earn 150 Stars
Help Greatbeard & Benji on their way
Earn 75 Stars
Finish a level with less than 0.03 seconds to the next star rating
Let Benji join your adventure
Earn 25 Stars
Jump off the ship