^^^^ This....just did this in the sim myself. If you play the game correctly the ash shouldn't sneak up on you. Get the volcanic ash QRH out before you lose the engines and review it since you are flying in an area of known volcanic ash activity. When you lose both engines do the ECAM and it will lead you to the Dual Engine Failure - Fuel Remaining QRH. Do that until you get one relit and then continue to attempt the relight on the 2nd engine as you don't know how long the 1st restart will last. The ECAM also comes up with the N1 EPR Mode Fault. They will reset but we skipped them and came back to them after we got the engines running again. Have fun...