Create a game in Glacier (medium). You will start in town. There are two archers 
that are inside that town. When fighting archer vs. archer attacks, cause knockback 
which resets their shot. You can out shoot both of these archers by getting off your 
shot before them. They cannot hit you. Kill them, save the game, then restart and 
kill them again. You can continue to do this and merge your weapons/armor as many 
times as desired.