Hello!
1. Ah, dang it, the general tactics didn't make it into the PDF. I'll get them updated soon!
2. No dice rolls for Abilities, they just happen. But, you can spend any of your existing Fuel to amplify them. For example, Pyre's second ability is a guaranteed 1 Harm to an adjacent enemy. But you can roll Fuel dice, and any 4+ is a hit, adding +2 Harm per hit you rolled. Yes, 4+ is a hit and I realize that isn't clear!
3. No maximum
4. Once per turn.
5. 10x6
Thanks for pointing all those things out, I'll get to work updating the rulebook thanks to those questions!