Forced an enemy to drop dynamite that killed two people.
In Shantytown, you will start to see enemies who throw dynamite. To obtain this, you must get a total of 2 kills with the dynamite that is dropped. It's best to shoot the enemy throwing it in the body so that you don't kill him by accident. You can also use the rope pull if you are worried about it. Focus on getting this after a section or two after you first see the dynamite being thrown. There are some obvious spots that it will work, but others are too spread out. Remember you can always reload checkpoints.
Best place to do this is when you meet the scottish guy and dynamite is thrown at you in the cut scene. Leave the guy on the alarm and people will keep appearing. Wait until one of the enemies is about the throw some dynamite and then shoot it out of his hand.
When the solarii palace is burning down, after a cutscene of Lara getting a book and the map to rescue Sam, you will come up with 2 guys behind cover across the building. Watch the guy on the left, shoot him when he is about to throw the dynamite, killing both of them. Cheevo unlock