Here is the full list of all 18 Telltale Games' Poker Night 2 achievements worth 400 gamerscore.
Unlocked the Portal theme.
You've unlocked every poker item in the game.
You've won a million dollars.
You won a Personality Core. Try not to drop it down the incinerator.
Unlocked the Army of Darkness theme.
The Orb is yours, for better or for worse.
Sam's banjo is now yours.
Unlocked the Venture Bros theme.
You now own the scariest book in history.
Unlocked the Sam & Max theme.
Are you now Character of the Year?
Won a tournament.
Unlocked the Borderlands theme.
Purchased a felt.
Bought your first deck.
Purchased a drink.
Purchased a set of chips.
Won a hand.