Here is the full list of all 14 Skeet: VR Target Shooting achievements.
Set a high score with every gun in every mode.
Shoot down 50 UFOs
Get 2,000 or more points in Animal Gallery Mode
Shoot every prop in Trap Mode
Shoot all four pigs in a game of Trap Mode
Get 12,000 or more points in Trap Mode
Play a perfect game of Skeet Mode
Shoot all the metal animals in Skeet Mode
Get 15 or more points in Bounce Mode
Get a time below 2 seconds in Quickdraw Mode
Get 8,000 or more points in Targetwall Mode
Find the dev room
Shoot two clay pigeons at once
Shoot a clay pigeon