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