Also a rules note: AFAIK Mr. Fixit's turn, the environment turn and the villain's turn all count as separate for the purposes of his style, so he can redirect damage on each of those (and on our turns thought it's less likely that he'll take damage then).
My card only allows me to redirect the first instance of damage.
Right, but as ADK notes it's the first instance each
turn. Which includes Environment, Villain, and Player turns.
I'll note that there are some rules which are most clearly spelled out in the glossary, this is one of them.
Just to cover a few rules that seem to be commonly missed/misunderstood:
-a ROUND is the Villain turn, followed by each player turn, followed by the Environment turn. (A turn is each of those parts. Or if you'd prefer [from the Glossary] A turn is the portion of the game during which all the actions associated with a given deck take place.).
-You may only use each instance of a power ONCE per turn. (So if you're allowed to use 2 powers, they have to come from different cards, which generally means they have to be different powers...).
-When resolving Start of Turn/End of Turn stuff, it goes in the order played. If an end of turn action plays another card with an end of turn action, the newly played card will activate that turn.
-When resolving "simultaneous" stuff, it goes in the order the players want. So, for example if you have a card which says "whenever you are dealt 5 or more damage reduce it by 2" and another which "reduce all damage dealt to you by 1", then when you take 5 damage you can first reduce it by 2, then reduce it by 1 more. (This was changed at some point, so if you look around you'll see places which say that you need to go in order played for these as well.)
-If a deck runs out, you reshuffle it, but only when you need to DRAW from it (not when you need to REVEAL from it). So, unlike dominion, "search" cards will not result in a reshuffle.
Oh, one more quick note specific to Fixer, and Overdrive. Overdrive allows Fixer to use Strike twice on the turn it is played independent of any power activations. So, if he plays Overdrive during, say, Argent Adepts turn, he can strike twice during that turn. If he plays it on his own turn, and had another power available somehow...he could use that other power and THEN strike twice. However, if he strikes first then that uses up his "power" activation also. If Fixer manages to play multiple copies of Overdrive he can still only strike twice, not 4 times (i.e. it isn't additive).
Hopefully that's all clear enough...I saw lots of questions on forums about Overdrive as I was reading over the rules forums.