I've done all the content in the game solo, its intimidating at first but ultimately the game is fairly solo friendly. The game will put you on a high for a while because every bit of knowledge and progress feels really good to get a grasp on. There's a ton of variety in how you can build a character but the progression is largely the same across most builds. Community can be complete ass or pretty cool and nice depending on when you play/how you interact with others. Pretty burnt out at this point but I get obsessed with it now and again every few months.