Monsters

Surface Monsters

Day

 * Slime (Green, Blue, Purple, Pinky [Rare])

Night

 * Zombie
 * Demon Eye

Dirt Layer

 * Slime (Blue, Red, Yellow, Pinky (Rare))
 * Giant Worm

Stone Layer

 * Slime (Black, Mother, Baby)
 * Giant Worm
 * Skeleton
 * Tim
 * Dead Miner

Corruption Monsters

 * Devourer
 * Eater of Souls

Meteor Monsters

 * Meteor Head

Dungeon Monsters

 * Angry Bones
 * Burning Skull
 * Dark Caster

Underground Jungle Monsters

 * Hornet
 * Man Eater

Underworld Monsters

 * Bone Serpent
 * Fire Imp

Goblin Army Spawns

 * Goblin Warriors
 * Goblin Sorcerers
 * Goblin Thieves
 * Goblin Peons

Bosses
Strategies for killing bosses
 * Eye of Cthulhu
 * Eater Of Worlds
 * Skeletron
 * Unknown 1.0.4 Boss (May be tied to Rabbits or the new Overground Jungle)
 * Hydra (Maybe Coming Soon) - (Would Be In The Huge Bodies Water At The Edge Of The World)

Special

 * Servant of Cthulhu
 * Skeletron Head
 * Skeletron Hands