Here is the full list of all 25 Shoppy Mart: Steam Edition achievements.
Unlocked Writer
Unlocked Stoner
RIP Headphone users
Completed Shoppy Mart: Steam Edition
Reached Hell
Completed 500 Orders Successfully
You've reached level 10 and unlocked the new register!
Unlocked Nova
Unlocked ???
Unlocked Veteran
Unlocked I'm With Stupid
Unlocked Rosanne
Unlocked Rapper
Unlocked Crazy Hobo
Unlocked Albert
Scan 1000 Items
Unlocked EDM Producer
Completed 100 Orders Successfully
Scan 500 Items
Unlocked Buttface
Unlocked Larry
Unlocked Jimmy
Scan 100 Items
Completed 10 Orders Successfully
Scan 10 Items