Here is the full list of all 16 SpeedRunners trophies - there are 11 bronze and 5 silver.
Dodge a Golden Hook by sliding under it
Use the bomb on two opponents at the same time
Hit three opponents with one fireball
Freeze three opponents with one freezeray
Deflect a fireball with a shockwave
Don't touch the floor for 15 seconds
Maintain superspeed for a full second
Beat the first Chapter in Story
Beat the second Chapter in Story
Beat the third Chapter in Story
Beat the final Chapter in Story
Beat all Chapters on Unfair difficulty
Reach max XP
Grapple someone who just grappled you
Grapple someone from very far away
Shoot yourself with your own rocket - oops!