Here is the full list of all 49 Streamline achievements.
Recover from less than 5% health.
Eliminate the Runner with the most points with at least 5 other Runners still standing.
Don't move for 30 seconds.
Play at least 10 games of Streamline!
Eliminate a Runner from behind.
Reach level 2.
Eliminate a Runner while wall running.
Be the last Runner standing.
Eliminate yourself. :(
Eliminate a Runner that has not seen you in the last 10 seconds.
Eliminate a Runner in the air.
Stun another Runner and then get stunned within 5 seconds.
Eliminate another Runner during Sudden Death.
Eliminate the Runner with the least points with at least 5 other Runners still standing.
Don't touch the ground for 5 seconds.
Get stunned and then stun another Runner within 5 seconds.
Be within 5 meters of another Runner when they are eliminated.
Stun the Hunter.
Be within 3 meters of the Hunter and then get 25 meters away.
See the Hunter eliminate another Runner.
Get stunned.
Taunt while the Hunter can see you.
Be the last Runner standing and eliminate the Hunter.
Eliminate a Runner in a section that is closing off or has closed off.
Eliminate a Runner that is stunned.
Eliminate a taunting Runner.
Eliminate a Runner that picked up points dropped by another Runner in the last 5 seconds.
Be one of the last 25% Runners standing.
Eliminate 5 Runners in under 20 seconds.
Eliminate 10 Runners in under 30 seconds.
Stun 10 Runners in under 30 seconds.
Stun 10 Ghosts in under 30 seconds.
Wall run for 10 seconds.
Sprint for 30 seconds without stopping.
Loot 3 orbs from eliminated Runners in under 10 seconds.
Eliminate all Runners with more than 90 seconds left.
Stun 10 Runners in 30 seconds.
Reach level 5.
Reach level 10.
Reach level 25.
Reach level 50.
Unlock one cosmetic item.
Unlock five cosmetic items.
Unlock twenty cosmetic items.
Unlock fifty cosmetic items.
Play at least 100 games of Streamline!
Have someone bet over 100 credits on you.
Have someone bet over 1000 credits on you.
Have someone bet over 10,000 credits on you.