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