Here is the full list of all 37 High Noon VR achievements.
Collect and upgrade all weapons
Complete 20 quests
Kill 100 enemies with dynamite
Kill 100 enemy high in the air
Kill 100 enemies with shotgun
Kill flying enemy with dynamite
Kill 3 enemies with one shotgun shot
Make 10 headshots in a row
Make 10 gun upgrades
Kill 100 enemies with rifle
Kill 100 enemies with gatling
Make 5 gun upgrades
Kill 10 enemies with less then 1% of HP
Kill bitch boss
Kill all bosses
Collect all weapons
Kill fatty boss
Upgrade weapon to max lvl
Takeout 100 hats without killing enemies
Finish the wave with using a gatling gun and without overheating it
Make two headshots with one bullet
Kill doctor boss
Kill 1000 enemies
Spend $10000
Make gun upgrade
Destroy 1000 destructibles
Kill ratboy boss
Achieve x15 combo
Kill 250 enemies
Blow 10 destructibles with one dynamite
Spend $2000
Destroy 100 destructibles
Kill 100 enemies with revolver
Kill 50 enemies
Destroy 10 destructibles
Score kill with every bullet in cylinder
Spend $500