From the main menu, press start, select options, then matchmaking preferences. Scroll down to terrorist hunt preferences. Turn everything off except Protect Hostage and Presidential Plane - both of these need to be on!
It's suggested you form a squad with some friends. Play terrorist hunt but select lone wolf (meaning no match making) on normal. Your choice of operator does not matter although if playing solo I'd suggest Doc so you can revive yourself. Ensure your spawn location is Meeting Room as stated in the achievement description.
Survive all 4 waves to unlock the achievement. Reinforce walls around the hostage, block doors, lay traps, etc. You have a 10 second warning if you venture out of the plane - use this to your advantage to pick off spawning AI at the start of rounds. Wave 3 will include shield guys and wave 4 a suicide bomber.
Hope this helps!