Tom Clancy's Rainbow Six® Vegas 2 holds a treasure trove of achievements, all of them ready and waiting to be unlocked. Even a casual gamer can hope to score several hundred Gamerscore without too hefty a time commitment. With that in mind, the following tips should shave a precious hour or two off your time unlocking some of the game's most challenging achievements.

Rappel King: Kill 25 enemies while suspended from a rope (20 Gamerscore)

Whether you finished the game without scoring this achievement (like me) or you just want to get it over and done with early on, here's a quick solution. Play through the first training level, Pic des Pyrenees, until you find the first rappelling moment.

Rappel down, take out the three enemies and then select Reload Checkpoint from the Start menu. Simply repeat the process until the achievement unlocks. It may seem like it's taking longer than it should, but trust me, you'll get it.