Vindictus: Polar Bear Boss

Yea, the bosses are pretty easy with party members, that is if they know what they are doing, but there are a few dungeons that have a solo mode challange (you can choose to do any dungeon alone either way). This is where things are most interesting because the boss is only focused on you.

Also this was on normal. Hard mode is more fun because you need to focus more on your dodging and attacking at the right moment. And also make sure you don't get hit or you'll go flyin'.