I know the game isn't THAT complicated, but a quick ref on the back of the rulebook or on the player screen is pretty standard at this point..
Tell me about it. I was constantly referencing the rulebook to get the phases and, more importantly, the order of things within each phase, down correctly. And with the rule book so comprehensive, this spans several pages!
Detailed rule books are fantastic for initially learning a game, but terrible for referencing anything mid-game. Chvatil games have the exact same problems too.
I'm thinking about making my own reference card - one side with the phase order, the other side with guard movement priorities.