Unlock the following decks by winning the corresponding number of tournaments:

DECK - HOW TO UNLOCK
Grickle Deck - Win 18 tournaments
Homestar Runner Deck - Win 6 tournaments.
Penny Arcade Deck - Win 12 tournaments.
Poker Night Alt. Deck - Win 21 tournaments.
Poker Night Deck - Win 15 tournaments.
Sam And Max Deck - Win 9 tournaments.
Team Fortress 2 Deck - Win 3 tournaments.

Unlock the following tables by winning the corresponding number of tournaments:

TABLE - HOW TO UNLOCK/DESCRIPTION
Automata Table - Win 5 tournaments. This table makes the game black and white.
BLU Team Table - Win 11 tournaments.
Freelance Police Table - Win 19 tournaments.
Fruit Friend Table - Win 8 tournaments.
Max and Crossbones Table - Win 17 tournaments. This table makes Max a skeleton.
Max Imp Table - Win 1 tournament.
RED Team Table - Win 7 tournaments. This table makes Heavy wear a dealer's visor.
Strong Badia Table - Win 13 tournaments.
Team Fortress 2 Table - Win 14 tournaments.
Telltale Games Table - Win 4 tournaments.
Telltale Shield Table - Win 20 tournaments. This table unlocks all table effects.
Trogdor Table - Win 2 tournaments.
Twisp And Catsby Table - Win 16 tournaments.
Videlectrix Table - Win 10 tournaments. This table makes Strong Bad 32-bit.

ACHIEVEMENT - HOW TO UNLOCK
Down to the Green - Win consecutive all-ins.
Flush - Win a hand with a Flush.
Four of a Kind - Win a hand with Four of a Kind.
Full House - Win a hand with a Full House.
Kicker Trouble - Win a showdown where you and the opponent have same hand (pair or better) and you have a better kicker.
Rags to Riches - Win a showdown with just a high card.
Rushing - Win three straight pots.
Slow Play - Check a pat hand.
Special Item: Max - Knock out Max after he's bought in with his special item.
Special Item: Strong Bad - Knock out Strong Bad after he's bought in with his special item.
Special Item: The Heavy - Knock out The Heavy after he's bought in with his special item.
Special Item: Tycho - Knock out Tycho after he's bought in with his special item.
Straight - Win a hand with a Straight.
Straight Flush - Win a hand with a Straight Flush.
Summer of '69 - Win a hand with a 6 card and a 9 card of any suit.
Three Wise Men - Win a hand when you have three of a kind comprised of three kings (of any suit).
Triple Through - Win a pot with two or more opponents when you are all in.
Win A Game - Win a full game.
Win A Game, Hard - Win a game on hard.