Defeat Mammon Easily:
To beat Mammon easily you will need high MP and a 
lot of MP replenishing items. You also need to
stay as far away from him as possible (but not out
of range of your magic attacks). Now blast him with
FIRE 3 and AVALANCHE until he's dead. He usually 
uses three spells, a spell like homing arrows which
is hard to dodge, a spell that is like magma ball 
which is easy to dodge, and a spell that is like 
wind bomb which is easy to dodge.

Just keep using FIRE 3 and AVALANCHE and dodge his
attacks. He will die in a few minutes. He has 
around 2,100 Hp. 


Double Attack:
If your close enough to do combat with your staff, 
hit "A" and then choose a spell and hit "A" again. 



When Mammon fires three fireballs quickly run to the left or right 
to dodge them, you can do this nearly every time.