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