Update: #6 Light Bringer - Merchant

• There is a Merchant halfway through the level where you can buy health potions and new weapons. 
• The sales screen appears automatically when you get close to the Merchant.
•  You can only buy a weapon that is stronger than your current weapon. 
• You cannot buy a health potion if your health is at its maximum. 
• When you exit the sales screen, you have 5 seconds to move away from the Merchant before the sales screen appears again.