Position
To be successful in this game you must always be aware of your position and remember were the movement patterns of the guards at all times.
Lure Guards
Take advantage of the basic guards that can only chase you down hallways by luring them far enough from their post so you can get past them by taking a shortcut.
Manipulate Guards
There will be times where it is in your best interests to not kill a guard as they can unwillingly help you. If you lure a guard to stand in front of a turret and obstruct it's line of sight you will be able to move past it without being fired on.
Cloaking
Remember that if you use cloaking it will only make you invisibe for one turn on the node you are moving to. If you need to get past two nodes you will have to find another way to get past the second one.
Invisible
You will be able to take out normal guards from the front when you are invisible as they will not be able to see you coming and defend themselves. This is the only time you will be able to do this.
The grid you use for Hacking is completely different to the one you use to get around. Remember when you are hacking and using multiple terminals at the same time the lines can't cross each other so you need to plan carefully how you are going to draw each of them.
Guards 'Unhack' Termimals
Remember when you are being chased by guards they will immediately 'unhack' any active terminals they run past.