In addition to the drones using shields, later in the game, you will encounter opponents who can use camouflage. It is very hard to see them because when focusing on fighting their companions, we do not focus on observing various objects.
Enemies with camouflage can only land blows, so they prefer hand-to-hand combat. They always shorten the distance because they use a powerful blade attached to the hand. When you notice a blurred background on the screen or the chosen one is attacking you with a blue tool, move away from him, because his attacks take a lot of health.
Camouflaged enemies hate plasma. All it takes is a few accurate shots from the plasma rifle and their shield will fall, which will prevent them from using their favorite skill. Without protection, they are susceptible to normal damage but remember that if you wait too long to eliminate them, they will regain their shields, and thus, they will become hardly noticeable again.