Monsters are killed to obtain XP and loot. There's a 1/5 (20%) chance of encountering a rare monster in any areas.
Magnus's Combat Guide may also be used as a guide on how to fight the monsters more effectively!
Fields
Regular Monsters
Rare monsters
Blood Fields
Regular Monsters
Rare monsters
Forest
Regular Monsters
Rare monsters
Blood Forest
Regular Monsters
Rare monsters
Caves
Regular Monsters
Rare monsters
Blood Caves
Regular Monsters
Rare monsters
Volcano
Regular Monsters
Rare monsters
Blood Volcano
Regular Monsters
Rare monsters
Northern Fields
Regular Monsters
Rare monsters
Haunted Mansion
Regular Monsters
Rare Monsters
Beach
Regular Monsters
Rare Monsters
Other Monsters
Faradox guardians
Special Monsters
Quest Monsters
Tank (only available during the Tank(boss) Quest)
Ent Boss (only available during the Ent(Boss) Quest)
Thief Leader (only available during the Thieves Leader Quest)
Ghost Miner (only available during the The Ghost Miner Quest)