Star Wars: The Force Unleashed

Part of the Jedi Temple DLC.

Once you get in the temple and clear out the Shadow and Jump troopers pestering you in the first room, the training room is on the right behind a door you must lift with force grab.

When you enter the room, you will see a cutscene where droids will spawn from statues. To defeat this room, you must destroy all 8. There are 4 statues on the first floor that are large. The other 4 are statues that are bent over looking down into the room on the ring on the second floor. It'll take 1 or 2 saber combos to destroy each statue depending on how many times you manage to hit the statues during the first combo. Once all the statues are destroyed, all the droids will die instantly and, so long as it took you less than 2 minutes since the droids spawned, the achievement will unlock.

All credit goes to Adam (Achievement Hunter) for creating this video and posting it to YouTube. This video helped me immensely in getting the Robot Parts achievement for the Jedi Temple DLC.