I've been having some trouble with interpreting the combat rules: as far as I can find, the rules don't clarify how monsters with a mix of powers and weapons function in combat. Do they only get to act once, with their initiative determined by whatever weapon or power they used at the start of combat, or is it the case that they can use a weapon - a dragon's claws, for example, at an Init of +4 - and then they can also use powers at the relevant intiative step - to continue the example, the dragon attacks with its claws at Init +4, then breathes fire using a power at Init +2? What about a monster with multiple natural weapons, say our dragon has both a bite and a claw attack: could it use both each round, or would it need to choose one each time?
It had seemed reasonable to me that the creature would just roll once, and act at a different point each round depending on what it chooses to use in that exchange, being able to use only one action each round, but from what I'm able to see in the rules it looks like powers can always be used in their initiative step, whatever else the creature has done. That doesn't seem to be explicitly spelled out though, and I don't see anything about the case of multiple weapons at all.
And finally - does any of this change if we talk about a human? Would a companion with two weapons get to fight at the initiative step of each, or do they pick a weapon each round?