1. You can send C4 down ziplines. 2. K10 can and [i]will[/i] kill someone in under half a second of fire. 3. Battle Rifles handle like a Fat Man. 4. Always respect someone with a paint job/outfit. 5. Never trust elevators. 6. Especially if the hostages were unguarded. 7. Your zipline is invaluable if you use it right. 8. Always check for a blinking light under cars. 9. Make sure there's always someone at your vault in Blood Money. 10. Never go out of your way to avoid blowing up objectives in Hotwire. Thankfully they respawn.