Armor recommendations
Always buy leg and arm armor first, as they are hit the most. Also, always buy the lightest armor you can get.
Defeating opponents
You can easily destroy an opponent by hitting them at the joints of their armor (the elbow, knee, neck, shoulder, and hands).
Crusader's Sword
The Crusader's Sword may be small, but it has the fastest swing rate in the game and is worth saving up for.