It would be a much better game if it wasnt so awfully repetitive
Cons: Repetitive as hell, just kill mobs and mobs. Sadly is one of those games that the one that plays 24 hours by leaving it afk wins, and also u must almost lose ur personal life for it. Very lame storyline.
What can i say, i played mu online for about one year, got to lvl 200 and know im asking "for what i played for". I got to leave my char afking, fighting and fighting mobs to getting half bar for what??. Sadly mu is awfully repetitive and with absolutely no point. To get a very good set (with costs 100b or something) u have to look in maps killing mobs for days, weeks, months, then u get it, for what?. For killing more mobs? Pointless.
PvP (Player versus Player) System is also very strange, in duel mode all damage is based on ur str and lvl, normally damaging the opponent very little. Otherwise u can be a blade knight and have combo and unleash hell on any char. But watching combo duels is very boring (the first who connects it wins, thats all). The only opportunity for a real "pvp war" is guild wars, but finding a guild to make as guild war is hard, almost all are a bunch of cowards that only rely on ks or pk ur guild. The sound and music is great however u can get crazy hearing the mobs for long periods of time looking for jewels and exp. Music is good but a little repetitive (specially when u have to go trough lots of maps fast.
Finally u can try the global mu online official server or the private servers with more exp and the thing. The normal way to get exp on global is awfully slow from lvl 150 to up and in the other privates there is no good for gaining level fast cause all are likely the same strong as u.
My recommendation: If u are looking for an MMorpg look something else, there are much more renamed games like wow or ragnarok. If u want to give it a try, go until lvl 100 then leave, otherwise u will only be a masochist.