Here is the full list of all 29 SpeedRunners achievements.
Reach max XP
Beat all Chapters on Unfair difficulty
Promote to the Bronze League
Promote to the Beginner League
Beat the final Chapter in Story
Maintain superspeed for a full second
Beat the third Chapter in Story
Beat the second Chapter in Story
Beat the first Chapter in Story
Block 10 golden hooks with crates
Deflect a fireball with a shockwave
Freeze three opponents with one ray
Hit three oppenents with one fireball
Unlock Ranked matches
Grapple 100 opponents using the golden hook.
Grapple someone who just grappled you.
Witness the SpeedRoulette.
Dodge the Golden Hook 10 times.
Grapple someone from far away.
Block 10 Rockets with Crates.
Use a bomb on two opponents at the same time.
Overtake 1000 opponents.
Don't touch the floor for 30 seconds.
Don't touch the floor for 10 seconds.
Don't touch the floor for 5 seconds.
Drop a Crate on an opponent's head 10 times.
Tackle 10 opponents mid-air.
Shoot yourself with your own rocket.