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