So I ended up skipping everything after the 2.0 story and now I am regretting it lol I am now in the 2.5 story at the c-something fight with no idea what's going on and sad cause of it

What's the best way to g eery caught up? I'm tempted to start a new character and do it right lol but I've invested way too much so is the Inn room sufficent? Or is there a good summary online? Any suggestions?