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