Here is the full list of all 16 Buckshot Roulette achievements.
Start the 'Double or Nothing' mode 10 times.
Lose more than 1000K in 'Double or Nothing'.
Use all items in a single turn in 'Double or Nothing'.
Cash out over 1,000,000 in 'Double or Nothing'.
Breakfast of champions.
Cash out immediately in 'Double or Nothing'.
Listen to the music in the nightclub for over a minute.
Check the leaderboard.
It rains metal here.
Saw off the barrel, shoot yourself, and die.
Uncover a live round with the magnifier and shoot yourself.
Deicide.
Double your earnings in 'Double or Nothing' and win.
Successfully shoot yourself with a blank, facing 50/50 odds.
Consume the 'Double or Nothing' pills.
Beat the game.