BioShock Infinite

Note: Unlike the Old Man Winter plasmid, the Radar Range gun can be missed. It is found in the Housewares section in the basement of the Bistro. The door to it is locked and requires the 4 digit code found in the "Oven of the Future" Audio Diary, you can find the Diary in the broken elevator in the Electronics section.

Once you obtain the Radar Range, fire it at an enemy until they turn red and explode. Repeat this four more times for your trophy. There are enough enemies to easily accomplish this in your initial playthrough, but the counter for this trophy is cumulative so you can use Chapter Select to get it if needed. You will most likely earn this trophy while trying to get the Chain Reaction trophy.

The ammo for this gun depletes quickly but you can buy more at a Circus of Values vending machine: 300 rounds for $8. The Circus of Values machines are stand alone vending machines with an illustration of a clown on the front. This machine also talks (and laughs) so you will probably hear it before you see it.