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