Here is the full list of all 50 THE FINALS achievements.
Win 150 rounds with a Heavy Build
Eliminate an opponent with a headshot while you are sliding
Win 150 rounds with a Medium Build
Start a cashout with less than 10 seconds remaining in the match
Get 150 eliminations with Gadgets
Eliminate 3 opponents with a Melee Weapon within 10 seconds
Hit opponents with 3 different carriables within 15 seconds
Eliminate 25 opponents with fire
Eliminate an opponent with a cash box
Eliminate an opponent while you are on fire, 5 times in a single round
Eliminate an opponent with a flowerpot
Eliminate an opponent by bouncing a grenade on a Jump Pad
Eliminate an opponent while you are riding a Zipline, 10 times
Bounce a meteor off a Jump Pad during the Meteor Showers event
Destroy the skybridge in Seoul
Place an Explosive Mine on a carriable and get an elimination by throwing it at an opponent
Start a cashout within 15 seconds after opening a vault
Get a headshot elimination with the last bullet in the magazine of your primary weapon
Eliminate an opponent while you are emoting
Play 10 rounds with a Heavy Build
Win a round in any mode without being eliminated
Win the final round in Tournament or Ranked Tournament
Block a total of 25,000 damage
Steal a cashout with less than 10 seconds remaining in the match
Play 3 Tournament rounds
Get 300 eliminations with Ranged Weapons
Use an emote after eliminating an opponent
Eliminate 25 opponents with gas
Play 10 rounds in a Party
Throw a cash box into a cashout station from 20 meters away
Eliminate an opponent while they are carrying a cash box, 5 times
Heal teammates for a total of 25,000 health
Eliminate 3 opponents with 3 different items or carriables within 10 seconds
Get eliminated by your own grenade
Get 150 eliminations with Melee Weapons
Play 10 rounds with a Light Build
Hit an opponent in the head with an explosive carriable
Eliminate an opponent trying to steal your cashout, 10 times
Revive teammates 50 times
Deal 1,000,000 damage to arenas
Create a contestant
Finish in first place, 3 times in a row
Play 10 rounds with a Medium Build
Obtain a total of 100,000 cash
Insert a cash box into a cashout station
Play 3 rounds of Quick Cash
Revive a teammate
Complete the Tutorial
Win 150 rounds with a Light Build
Obtain a total of 50,000,000 cash