Here is the full list of all 13 Gungrave VR trophies - there are 9 bronze, 3 silver and 1 gold.
Defeated 50 enemies with Demolition Chaos Shot.
Completed Stage 5.
Completed Stage 4.
Completed Stage 3.
Used Demolition Chaos Shot 10 times.
Scored more than 1,000 headshots.
Completed Stage 2.
Completed Stage 1.
Completed the tutorial.
Canceled 10 of Cyclops' laser attacks.
Defeated 3 enemies at once with Demolition Death Aura.
Hit 20 enemies with reflected projectiles.
Earned SS score on Normal difficulty for all stages.