The "Can't Stop Crying Pack" is a DLC for all versions of Castle Crashers. There are ways to unlock it on all versions.
The DLC features 1 new Playable Character, 1 new Animal Orb and 1 new Weapon.
Hatty Hattington is the antagonist from The Behemoth game BattleBlock Theater, and is the only character in Castle Crashers to have a square head.
The Golden Whale is the new Animal Orb which ocassionally defecates a cube of gold worth one gold coin.
The Emerald Sword, pictured below, is a green sword that increases your magic and reduces your agility. Because of the negative agility, it's not recommended for low level characters.
How To Unlock
Obtain one achievement in the XBLA game BattleBlock Theater.
Download Can't Stop Crying Pack DLC for $1.99.
Purchase BattleBlock Theater through Steam and start up Castle Crashers.