Here is the full list of all 49 Streamline achievements.
Reach level 5.
Be the last Runner standing and eliminate the Hunter.
Recover from less than 5% health.
Be one of the last 25% Runners standing.
Be the last Runner standing.
Reach level 2.
Play at least 10 games of Streamline!
Don't move for 30 seconds.
Eliminate a Runner that is stunned.
Eliminate a Runner from behind.
Get stunned and then stun another Runner within 5 seconds.
Eliminate the Runner with the least points with at least 5 other Runners still standing.
Be within 5 meters of another Runner when they are eliminated.
Stun the Hunter.
Eliminate a Runner in the air.
Eliminate a Runner that has not seen you in the last 10 seconds.
Eliminate the Runner with the most points with at least 5 other Runners still standing.
Eliminate yourself. :(
Stun another Runner and then get stunned within 5 seconds.
Be within 3 meters of the Hunter and then get 25 meters away.
Eliminate another Runner during Sudden Death.
See the Hunter eliminate another Runner.
Get stunned.
Don't touch the ground for 5 seconds.
Taunt while the Hunter can see you.
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.
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 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.