Legend Game System/YMMV


 * Game Breaker: Discipline of the Serpent enables monks to out-damage barbarians and rangers at high levels. As of the May 2012 update, it is still being rewritten.
 * Scrappy Mechanic: The inclusion of mundane shields alongside the current weapon rules has annoyed pretty much everyone, up to and including the dev team. Apparently there was a bit of miscommunication between the people who wrote the rules and the person who typeset the rules.