Here is the full list of all 20 Don't Be Patchman achievements.
Defeat the Circle Boss
Rescue a Sheeple Girl
Rescue a Sheeple Guy
Grow Granny an Apple
Grow an apple without talking to Granny first
Restore your health by eating apples (Granny's Cottage)
Get killed by bear while talking to Granny
Show off your immunity to symbols (Fresh Fruit in the Fridge)
Kill a drone by planting a growth trap (Growth / Garage)
Win Growth / Garage without a hoe
Never seen once during Three Houses and a Destructive Beam
Never get hit by a laser in the Convoluted Factory
Power down the Convoluted Factory without taking any tools or seeds from the shack
Every machine and drone obliterated in the Circle Boss Factory
Don't get hit by the Circle Boss
Get killed by a destructive beam
Beat every level on HARD mode
Dunk a Sheeple Tot in a river
Lead a Sheeple off a cliff
Rescue an Office Sheeple