When rotating 90 degrees do you rotate clockwise or counter clock wise? or either?
All of the examples I've seen most people tend to rotate their mech clockwise and that is how we have been playing.
I didn't see any thing specifying this in the directions!
You can choose which direction you want to turn.
Does it state this anywhere in the instructions?
In the rules reference on page 3, bottom right:
Turn Commands turn the Mech without moving it. A 1-Power Turn (a single card) will turn the Mech to face either its right or left. A 2-Power Turn will allow the mech to turn to either side or to turn around completely. A 3-Power Turn will allow the player to choose to turn a full 360 degrees and end up facing the way it started. Some turns will also deal Damage. You MUST execute a Turn Command, you may not forego them.