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