Here is the full list of all 13 GUNGRAVE VR achievements.
Completed the tutorial.
Completed Stage 1.
Completed Stage 2.
Completed Stage 3.
Completed Stage 4.
Completed Stage 5.
Canceled 10 of Cyclops' laser attacks.
Scored more than 1,000 headshots.
Used Demolition Chaos Shot 10 times.
Defeated 3 enemies with Demolition Death Aura.
Defeated 50 enemies with Demolition Chaos Shot.
Hit 20 enemies with reflected projectiles.
Earned SS score on Normal difficulty for all stages.