Red Faction

Note: All weapon-related trophies count across all saves. If you want you can make a save near enemies, kill them, reload the save and repeat the process for every trophy.

The Sniper Rifle is one of the harder weapons to get kills for, due to the fact it doesn't auto-lock like other guns and enemies are extremely erratic, making it hard to snipe them. You will be able to get your first one before the Geothermal Plant, plus a fair few throughout the game. You can make life a tad easier by holding down the alt fire button to activate the scope.