Here is the full list of all 100 Pesticide Not Required achievements.
Survive Winter IV
Eliminate a boss within 5 seconds of it spawning
Win a run as Furog
Win a run as James Pond
Win a run while under 10% health
Finish a run without getting hit
Win a run as Truffle
Reach level 90 in a single run
Win a run as Sir Hopselot
Survive Autumn IV
Buy 5 pet cosmetics
Win a run as Pumpkin
Win a run with 500,000 or more coins remaining
Buy 10 pieces of decor
Win a run as Swifty
Win a run with 3 or less weapons
Win a run with 2 or less weapons
Win a run with only 1 weapon
Win a run without eliminating any pests on Day 1
Reach level 70 in a single run
Win a run as Sprout
Survive Summer IV
Win a run as Bean
Survive Spring IV
Win a run as Hue Mann
Survive Winter III
Find every unique Winter fish
Fill out the entire compendium
Win a run as Greg From Accounting
Survive Autumn III
Reach 50% or higher Enemy Spawns
Reach 75% or higher Crop Yield
Reach 75% or higher Resistance
Win a run as Mignon
Win a run without scaring any ducks
Harvest 500 crops in a single run
Reach 75% or higher Coin Gain
Fill all 48 plots with the same crop
Stand still for 100 seconds
Reach max level on Lawnmower
Reach 100% or higher Projectile Speed
Win a run as Plotty
Survive Summer III
Pet Rosco 100 times during a single run
Win a run as Finn
Survive Spring III
Eliminate 10,000 or more pests in a single run
Reach max level on Tadpole Spew
Win a run as Collier
Survive Winter II
Find each unique ore type
Win a run as Squeegee
Survive Autumn II
Find every unique Autumn fish
Win a run as Stripe
Survive Summer II
Find every unique Summer fish
Win a run as Bubba
Survive Spring II
Reach max level on Bombs
Reach 20 water capacity
Reach max level on Scarecrow
Find every unique Spring fish
Win a run as Billybob
Survive Winter I
Land a triple critical hit
Reach max level on Katana
Reach max level on Bouncy Ball
Reach 75% or higher Crop Growth Speed
Reach max level on Mole Turret
Win a run as Penelhoppe
Survive Autumn I
Reach max level on Boomerang
Reach max level on Yoyo
Catch 50 fish in a single run
Occupy all 48 farming plots at once
Plant 50 crops in one day
Reach max level on Haybale
Reach max level on Toad Oil
Win a run as Dr. Hopps
Survive Spring I
Eliminate a boss while WUMBO
Win a run with under 100 crop harvests
Reach max level on Weed Wacker
Reach max level on Fairy Dance
Reach max level on Wood Axe
Reach max level on Bonk Hammer
Reach 200 or higher Max Health
Win a run as Joe
Survive Summer I
Collect 20 apples in a single run
Mine 50 Ore in a single run
Get 10 pets in a single run
Harvest at least 1 of each unique crop in a single run
Reach 75% or higher Move Speed
Reach max level on Tongue Lash
Reach max level on Pitchfork
Reach max level on Mower Blades
Reach max level on Water Beam
Reach max level on Twin Scythes