I've never experienced another MMO with this many bugs.
First, in order to log in with Steam there is a separate launcher from the game. This only works half the time and there is no way to manually log in. After every update it stops working or sometimes it just stops working for no apparent reason. Second, quests are bugged. I've had a main storyline quest just break with no way to recover it and no other quests available, effectively making the entire character useless. Google revealed that there are several quests in particular that have been broken for years without anyone working on them. Third, the prices for items are different depending if you are on the Warp Portal website or if you're on Steam. The best deals are on their site. Also, some items expire after a couple of days (which is bad if you can't log in half of the time.)
The game has been doctored so that Warp Portal can make more money. In the original Korean servers, there are quite a few Tiger mounts that you could purchase for in game money. All of these have been removed and put in a cash shop were you have a CHANCE at getting them permamently in a box. (There is only one mount available that does not require real money.) Costumes are not permament either. Most costumes expire after 30 days and you need to buy extenders to keep it. Both these items cost real money. If you want a permament costume the only way to get it is by more chance items, or by getting a lot of rare stones to play a pyramid game (which has an extrememly low chance of getting an item.) Inventory / Bank space is severely limited. Only 'medium' bags are dropped / purchasable which hardly have any slots. You will get these at level 10. If you want actual space, you need to buy bags from the cash shop. RO2 may not be a 'pay to win' but it sure is a 'pay to do anything fun' sort of game. Server population is pretty low. No one seems to be socializing. In fact, all the social interaction I had was a creepy guy hitting on me. So, if you play MMOs in hopes of finding some new buddies to talk too, you won't find them here.
If you insist on plaything this game, do not do it through Steam. Go to the site itself, or better yet find another company / private server. Warp portal is not doing a good job integrating RO2 with Steam. If the game actually worked as intended I might suggest it for someone looking for a casual game to play with friends (if you don't mind old school rpg grinding) but since Warp portal provides such a terrible service, I suggest trying one of Aeria Games' anime MMOs instead. They have a cash shop too, but they are more fair about what they give you.
Overall RO2 is a HUGE DISSAPOINTMENT and I am not saying this because it is different from the first game. I am saying this because of the bugs, Warp portal's poor choice of business model and all the issues I've been having. I've played a ton of f2p mmos and none have quite been this bad. You have been warned!