Here is the full list of all 105 Bum Simulator achievements. It takes around 12-15 hours to unlock all of the achievements on Windows.
Find all feathers.
Collect all costumes for your pigeons.
Collect all blueprints.
Earn 50 respect.
Earn 500$.
Die of dehydration.
Cook the Bum's Special.
Get electrocuted.
Destroy the armor of a Bug Knight with an exploding projectile.
One-shot a Bug Shaman with an electrifying projectile.
Discover the Flash Bourbon recipe.
Discover the Green Goo Vodka recipe.
Discover the Clown Royale recipe.
Urinate on a puking person.
Get into a fatal traffic accident.
Urinate on your own fridge.
Produce a pack of cigarettes.
Take a shower.
Hang a tribute for your best friend in your base.
Liberate all base locations.
Die of hunger.
Fall from too high.
Apply a costume to your pigeon.
Sleep on a bench for at least 8 hours.
Roast a vegetable or a fruit.
Harvest a sustainable homegrown plant.
Accelerate plant growth with guano.
Create paper for the first time.
Earn 100$.
Complete all Richman's side quests.
Try Italian cuisine.
Complete all shooting gallery side quests.
Find 25 feathers.
Complete all Trixie's side quests.
Throw a Bug into the ocean.
Attain level 30.
Complete one shooting gallery side quest.
Complete the main story.
Catch 10 things in a single Pigeonado.
Attempt to interrupt the villain's monologue.
Solve the EvilWay maze.
Place antennas in three different bases.
Collect 10 blueprints.
Complete all Mr. Jello's side quests.
Blow up.
Charge the battery.
Find 10 feathers.
Complete a Trixie's side quest.
Harvest any homegrown plant.
Try American cuisine.
"Win" the fight on the rooftop.
Retrieve the EvilWay security key card.
Feed Little Bro.
Fully upgrade Peckers.
Fully upgrade Pigeonado.
Acquire resources from a minion sent on a mission.
Smelt copper for the first time.
Recruit a Creep in your base.
Fully upgrade Pigeon Shuriken.
Smelt aluminum for the first time.
Become a five-star player.
"Pick" a lock.
Attain level 15.
Prepare Hot Dogs for beachgoers.
Get a grade of F when drawing.
Complete all Dr. East's side quests.
Drown.
Paid (with) your respects.
Transport a passenger on Carl.
Knock a corrupt politician down a peg.
Buy a drink or snack from a vending machine.
Earn 10 respect.
Find the Safehouse.
Finish the investigation of the EvilWay secret EvilLab.
Destroy EvilWay's surveillance equipment.
Pay off a bug raid.
Liberate another base location.
Complete a Dr. East's side quest.
Attain level 8.
Obtain a free product from a vending machine.
Complete the presentation of Fus Doh Beer.
Meet the good doctor.
Support John's business.
Support Richard's business.
Earn 25$.
Complete a Richman's side quest.
Defend successfully from a raid.
Fill Carl's inventory.
Decide to defend your base.
Earn some respect.
Interact with a phone booth.
Complete a Mr. Jello's side quest.
Pawn 0.01$ worth of items.
Deliver Mr. Jello's package.
Find a feather.
Collect a blueprint.
Meet the Pigeon Lady.
Level up.
Learn about Shuriken Pigeon.
Get Bugzy his due.
Try to get money from the BPD.
Learn to work for change.
Achieve a grade of A when drawing.
Consume your first find.
Listen to the whole main menu song.