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