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