Call of Duty: Modern Warfare 2

These are the last two missions of the game.

Just Like Old Times: Just follow your leader and only kill when he tells you to. Once you make it to the steam room, flank the enemies and follow the lead. In the next room, flank the next enemies and get ready for a Breach. Breach, watch your fire, there are explosives in this room. Now, activate the console and get out. Kill the enemies outside, and move on to the cave.

End Game: Drive the boat and only focus on that. Shoot only if necessary.