Lets see,
Prone to hanging and afterwhich need to reinstall.
Game design which allows for high lvls to kill hunt and kill much
lower levels; and the killing can start at lvl 5 or maybe lower.
Note that lvl 5 can be reached easily by a person who just started
the game and played for like 20 min or half an hour.
Lack of guidance on how to play or what statistics/health bars are
for what.