Atelier Ryza 2: Lost Legends & the Secret Fairy

• I'm about 75% through, and I'll say nothing has been missable so far. I completed the first Ryza and nothing was missable in that one either.

• I'd recommend on the Skill Tree make sure you start by working towards new gathering tools (bottom right), then new bombs and healing items (left of center), and the SP up nodes (right and up from center). Then just kind of fill in from the center outwards. If you go too far from the center at the start you'll either run into recipes that are locked behind the story, or that you won't have the parts for a long time.

• When you unlock the ability to modify your Core Elements note that after you level them up you actually have to equip them, because I missed that for a bit. You'll see on the screen when you get there.