I noticed this while trying to kill a level 14 when I was like, level 10. If you go to darkshore, and get on an island, or land, and attack those monsters that only go in water, and atract it towards land, you can attack it, but it won't die. It will say 'Immune' over and over again, but you still get a level up every so often. You can use this for a bow/gun/crossbow/cast/wand. It's good for low levels. Hope you like it. (by sinister)
have fun ;)
have fun ;)