Extremely fun game, ruined by its community. Let me explain: The fun in this game is learning, and growing your characters and items in level. The fun isn't in BEING level 100 with level 100 gear. The fun is in PROGRESSIVELY GETTING THERE. But the community is all about boosting, which can give you 30+ levels in an hour, and gifting high level (sometimes hacked) items. So instead of experiencing the joy of progressively getting there, increasing this and that, instead you are suddenly propelled to new heights. And while that boost seems great at the very moment it happened, this pleasure is infinitely short-lived.
This is the reason I created my group, Dungeon Defenders Hardcore, for players that care about having fun with the game, not just reaching level 100 ASAP. What then? You know?
Other than that, this is an awesome game, and I am looking forward to Dungeon Defenders 2.