what nokill said, just remeber that as soon as the droid announcer says, '5 mintues till critical sytem failure' start moving fast. And try to time in your head. Try to use your Anti-Armor and other explosive stuff wisely to get through faster. Every minute, the droid annoucner should say, (#) minute(s) till critical system failure. Once you hit 2 minutes till you should preferably be going into the bridge if not already on it. If you don't get there before it says 1 minute remaining then you've pretty much already lost, cause you have to retrieve data from a computer on the bridge and the hack takes 1 minute. I mainly used my anti armor charge to take out 2 heavy enemies at once on my way to the bridge, or ECD's.