The Jackals

A jackal is an alien with a strong shield that covers most of the body. If you want to kill a jackal, there is a white hole in the middle of the jackals shield. If you throw a grenade at one, it will bounce off due to its shield. Do not throw a plasma grenade at the shield either, because it will bounce off. The other thing that you can do is melee attack it and it will die. The plasma pistol is another good gun against the Jackal. If you overcharge the gun and shoot the jackal, it will disintegrate its shield. Then shoot it and it will have no chance against you.