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