I'm still quite early on in 2.0, but I was wondering when you are adding points to your stats... is there any way that you can actually screw up your character? If you find all the build notes does Jet end up being maxed out all around the board or do you have to choose?

What attributes are most valuable (I'm assuming health and energy)?

How important is it to find all the build notes? If I miss one, should I redo the "level" to find them all or will I be fine without a few? I'm not usually much of a completionist on my first run through a game but I hate missing things that will end up genuinely nerfing my character.

If you are a stickler for completion, then aim to collect all build notes. By the end of the game, you should be able to reach 10.0.1 or thereabouts.

Depending upon your gameplay, health and energy are important, especially for boss battles or endurance runs, where reacquiring those will be difficult. You always have your disc, so basic attack is simple enough, and increased damage with any weapon is helpful. Transfers and processing are good if you know you're going to be in a bind and want to collect all the downloads as quickly as possible.

Also, find a copy of the Prima game guide, either as a physical copy or a pdf.