Here is the full list of all 37 Gun Club VR achievements.
Equip overpressure rounds
Shoot off the leg of a zombie
Shoot a fire alarm to set it off
Let every target fall over from time-out
Get a headshot on every target in a range
Spend only one bullet per target in a range
Equip incendiary rounds
Equip explosive rounds
Equip Zombie Rounds
Equip armor piercing explosive rounds
Destroy 50 food items in the Sandbox
Destroy 2 targets with one round (requires AP rounds)
Complete a sideshow range in under 25 seconds
Fire 10,000 rounds
Destroy the last target of the range with the last bullet in your clip
Attain at least bronze on every Warehouse range
Attain at least silver on every Warehouse range
Attain at least gold on every Warehouse range
Attain platinum on every Warehouse range
Equip armor piercing rounds
Have $1,000,000 cash
Get a perfect reload
Equip hollow point rounds
Purchase a skinned version of a gun
Blow up more than one target at once using an explosive
Equip as many attachments as possible to an owned gun
Equip the largest magazine available to an owned gun
Use a grenade on the final target in a simple range
Own all of the available weapons
Own half of the available weapons
Complete 50 ranges
Get 10 headshots in a row
Attain at least bronze on every Allied range
Attain at least silver on every Allied range
Attain at least gold on every Allied range
Attain platinum on every Allied range
Destroy 500 food items in the Sandbox