You will know when a vortigaunt is about to attack because they will charge up their bolt for a couple of seconds, emitting green electricity into the air. When met at close range, they attack with their claws, causing more damage than their electric bolt. At long range, they attack by an electrical charge. The pistol, crowbar, or hivehand when you're further into the game are recommended for taking out barnacle- anything more powerful is a waste of ammo.ДЄlien Slaves, also referred to as vortigaunts, are slaves from the alien planet Xen ordered by their master (whoever that may be) to kill anything that isn't from Xen, specifically humans. Barnacles will not distinguish between you and an enemy, and can be used as traps to snag marines. This will not save you from falling damage, however. Thankfully, however, it only takes one swipe of the crowbar to kill a barnacle, so if you do get caught by one, simply swipe the barnacle when you reach its mouth. If you do not kill the barnacle by the time you are sucked into its jaws, you will be instantly killed. If you wander into a barnacle's tongue, the same will happen to you. If something wanders under the barnacle and touched its tongue, the barnacle will immediately begin reeling it in. These can be hard to see, especially if the barnacle is stationed up on a high ceiling. They have extremely long and sticky tongues that they hang down from the ceiling. Occasionally it only bites once when you reach its mouth, giving an opportunity to kill it.Д«arnacles are stationary aliens that attach to ceilings. Damage: Instant death if it manages to pull you up to the top where its mouth is.

Half life 1 enemies