Here is the full list of all 34 Telefrag VR achievements.
Finish the Tutorial.
Telefragging an enemy with the ORB.
Telefragging an enemy with the Beacon.
Telefragging an enemy with the Rocket.
Telefragging an enemy as the Shadow.
Telefragging an enemy with the Trail.
Killing an enemy 3 times in a row (in a single match).
Killing an enemy 2 times in a row (in a single match).
Telefragging an enemy 3 times in a match.
1st Plasma Rifle kill.
1st Rocket Launcher kill.
1st Flak Cannon kill.
1st Laser Pistol kill.
1st Particle Cannon kill.
10th Plasma Rifle kill.
10th Rocket Launcher kill.
10th Flak Cannon kill.
10th Laser Pistol kill.
10th Particle Cannon kill.
100th Plasma Rifle kill.
100th Rocket Launcher kill.
100th Flak Cannon kill.
100th Laser Pistol kill.
100th Particle Cannon kill.
Win your 1st match.
Win 3 matches in a row.
Win 5 matches in a row.
Win 10 matches in a row.
Telefrag an enemy using 2 different teleporting weapons during one match.
Telefrag an enemy using 3 different teleporting weapons during one match.
Win a Match against the bot.
Play 10 Quick Matches.
Play 50 Quick Matches.
Play 100 Quick Matches.