Covetous Demon
The Covetous Demon is a boss found at the top of Harvest Valley. He is a large, slug like creature that deals physical damage.
How to Beat the Covetous Demon Boss
He seems to be resilient to poison, but suffers a weakness to Fire and Magic. Other elements are unconfirmed.
Melee Characters
Melee characters should enter this fight with mobility on their mind. There is no use in blocking this slow demons attacks, instead just run circle around him. He has a forward punch that is fairly short range, a lunge which is easily dodged, and a strange roll over that can crush you if your near his body, or will whack you with his tail if your near that.
The basic strategy is to keep him about 5 feet away and circle him until he attacks then come in for the kill. His attacks are all slow and have a long recovery time allowing you to hit him multiple times.
Ranged Characters
Casters and archers will have an even easier time with this fight. The boss only has one gap closing attack and it is so slow that you can easily dodge it. Pummel him from a distance with ease, although take note that he seems to be somewhat resistant to poison and possibly hex magic.