Kill 20 enemies in 60 seconds.

Another simple trophy that can be obtained easily. Once again any weapons will count for this, I will recommend machine guns because they will take an enemies health away much faster which allows you to move on killing as many as you can in the shortest amount of time. Also Normal soldiers; elites; colonels & maybe bosses count for this so just shoot anyone you see.

There are a few good situations where you can get this trophy:

1. When doing stronghold takeovers As you go through a base trying to kill the current occupiers there will be alot of enemies. Try to find a mounted gun and detach it to carry it with you (do this by pressing then just keep hold of and shoot anyone in sight. Also at the end of the takeover when you need to protect the technician there will be a final surge of enemies, sometimes there are more than 20 to kill & sometimes there is a mounted gun nearby so use that.

2. During agency mission 3 In the last part of this mission you will be in a small temple area carrying a Gatling gun. You have to go on the specific path following Sheldon & at every turn there will be some more enemies to kill. Just unload on them and continue to the next turn. You may want to memorise the path you need to take & restart this part of the mission, that way you will be able to get to the enemies faster.

Look for ## number of enemies killed in the last 10 seconds to come up on your screen, this gives you a good idea of how many more you need within the remaining time limit.

Alternatively you could go and try the following mission, thanks to witteijsbeer for reminding me of the mission name:

In the very south of the Island there is a faction mission called Holy Smoke for the Ular Boys. The objective for this mission is to protect a small temple containing Optium. You will near a small temple where the enemies will attack you in waves. The waves contain alot of enemies, the harder the difficulty the more the enemies so if you are on hardcore difficulty it would be ideal. As the waves attack you simply throw grenades/C4 or just shoot at them. You should easily be able to rack up 20 kills within 60 seconds.