This game is really beautiful, indeed the characters are a little weak in terms of voice acting in my opinion, but for the graphics and world design, the game is not lacking. I'm 17 hours into the game and all I can say is that the quests, the graphics and the whole world are just amazing and worth giving the game a try. There are some parts in the game, where some textures are a little bit rough and pixelated, especially when activating na'vi senses, but not that many to become an issue in enjoying the game. I'm still struggling to finish the main story, because I get distracted by all the beauty in this game, the mini-games/exploring part. At first I was a bit skeptical about this game being good, but I was pleasantly surprised. So I recommend to give it a try for yourself, I wasn't disappointed.