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