This was the only missable trophy I didn't get in my first run. You first get the camera during the fourth level, Pauper's Drop. When you equip the camera, you can press the or the when you aim at an enemy and then a film will start rolling. During this time, you have to attack the targeted enemy with a variety of attacks to raise up the meter. Once you have killed the enemy or you have acquired an upgrade on this enemy, the recording will stop. Each enemy has four upgrades and in order to get the trophy, you need to get all four upgrades in every enemy type in the game. Apart from the Thuggish Splicers, you can find all enemies up until the last level. The enemies are the following:
 

• Thuggish Splicer: These enemies can be researched only at the level where you find the camera. They are your top goal if you want the trophy. They are the Splicers that have only melee weapons.
• Leadhead Splicer: The enemies that have weapons. They are the most common enemies in the game.
• Brute Splicer: This enemy is just as the name says it, a Brute. They will throw debris and charge at you, so freezing them will do the trick.
• Spider Splicer: This Splicer is literally a Spider. It can climb on walls and throws objects at you.
• Houdini Splicer: You will first meet this enemy, in the Dionysus Park level. They teleport around you and attack you with Plasmids. Freeze them to prevent them from moving.
• Big Daddy: The same enemy as you. Some of them accompany a Little Sister. Their characteristic is that they do not attack unless you attack them. This does not mean that they are easy to defeat. You need to come up with a strategy to put them down.
• Big Sister: The new enemy of this game. This is the biggest pain when it comes to take it down. A Big Sister appears when you deal with all Little Sisters in a level. You won't have too many encounters with one, so grab the chance when it's presented to you.
• Alpha Series: These are basically Big Daddies whose body is corrupted cause of the loss of their Little Sister. They are skinny and they will attack you in sight. They first appear in the Fontaine Futuristics stage.
• Security: The Security consists of Turrets, Security Cameras and Security Bots. You can do the same trick as in the  Master Hacker trophy to get all the upgrades fast.

 
**NOTE**
I know you are probably tired of this but I'll tell it once more. As soon as you find the Research camera, research like hell every Thuggish Splicer you come across with. You can find this enemy only in the same level you find the camera and if you haven't max researched this enemy before you end the level, you won't get the trophy.