Warp AssassinG 10

Warp Assassin G10:
Warp-killed a total of 8 enemies at the Ostium Gorge.

When you are first introduced to warp-suspension, this is when you'll get this achievement. You can chain a number of kills after suspending by clicking on the circles above the enemy's heads, so just do that quickly in each suspension point. There are 15 or more easily to get this on.