DOOM 3: BFG Edition
59 Achievements
50-60h
Play Catch
Kill 20 enemies with projectiles launched from the Grabber in RoE
1.9%
How to unlock the Play Catch achievement in DOOM 3: BFG Edition - Definitive Guide
EmoTerrorist69
TrueAchievements
TrueAchievements
Once you have this gun simply use it to catch fireballs from imp's and kill them with it. After 20 kills this will unlock. This is accumulative so you don't have to do this in one level or in one save just any 20 kills.
Patrickillian
TrueAchievements
TrueAchievements
When you enter the room, it turns red and an Imp will spawn. Use the Grabber to hold the Imp's fireball in air and return it to him. After he dies, reload the save point e do it more 19 times.
To play safely, when you reload the save after 5 or 10 kills, before entering the room, just save to retain the record.
DarkSoldier2123, and, Harry94
You get the Grabber after the cutscene which shows a solider throwing a fireball back at an Imp, he gives you the gun then. All you have to do is when a demon throws a projectile at you press and hold 
on it and then release to throw the projectile back at the demon. It will kill them in one hit on Recruit.
Nevander
The Grabber (also known as the IPL) is a weapon very similar to the Gravity Gun from Half-Life 2. It can grab objects and toss them, and can even be used as a weapon in itself. The Grabber will be obtained right near the start of the game from a dying Marine. You will need to toss objects at 20 enemies and kill them with said tossed object.
On a related note, the Grabber is extremely useful for Forgotten Ones (fiery flying skulls) as it is an instant kill.
