Infiltrator

Infiltrators 'are enemies appearing in Fuse''. They are first encountered at the Triton Outpost.'''

Overview
Infiltrators are even more dangerous than Spec Ops in a few ways. These enemies also try to disable agents. rather than hang back and attack most of the time, they charge right in against your team. Infiltrators use cloaking technology to avoid detection. You might see a ripple in the air, but that's about all the warning you can expect until they grapple someone.

Infiltrator suits do have one weakness. They let out an electronic whine that is audible from a moderate range. If you hear that noise getting louder, you know that an Infiltrator is approaching.

The best way to kill Infiltrators is to shoot them before they grab anyone. Watch carefully for signs of their approach. Once you see movement, start firing. Infiltrators do not have much armor, so it doesn't take many hits to kill them. Focus more on hitting your target rather than getting headshots.

Dalton doesn't need to aim his Shield Blast, so he's rather adept at countering Infiltrators that get close to the group.

Jacob has the burst damage and the area of effect to do pretty well. Fire toward the sign of movement. If you miss, set off the energized bolts and hope that hits your enemy instead.

If Naya has time, have her switch to the Prowler so she has a weapon with high burst damage and a good spread. That works better against Infiltrators than her Warp Rifle. Also, make sure that Naya is cloaked. This prevents the enemies from grabbing Naya, so she is free to attack any of the Infiltrators that grab her teammates.

Use melee attacks on any Infiltrators who grapple your allies. If you aren't close by, shoot at the targets instead. Your won't hurt your teammates if you miss, so be aggressive. Infiltrators eventually kill the people that they're grappling, so don't take too long.