Stalker

Walther's Notes - Restored
This note was found hidden in an alley with portion of it missing. It has since been partially rewritten through conjecture.

''It wasn't long after we spotted the first that more eventually started to pop up out of the darkness, creeping behind a corner. Staring. One of our members saw it peeking and instinctively shot it - or so it seemed. Poor kid probably felt confident that he killed it, but as soon as he distanced himself from the group to take a closer look, the thing grabbed him and bolted. We attempted a rescue, but it was cut short as soon as we realized the creature had sprinted in the direction of the oncoming horde.'' ''One thing I've noticed is that it keeps its victims awake. I hope that kid didn't have to go through that.''

Summary
A very tall, grey and disturbing creature that has special powers. It grabs survivors when they get close and takes them away from the main group to be killed. It turns invisible when idle, can shield itself and move very quickly. It's a survivor's worst nightmare.

Background Story
The whispers from the fog haunt the dreams of those who were there at the beginning. They cause them to recall missing comrades. Silhouettes, tall, thin, sprinting through the corner of their eye. They turn, and nothing is there.

Every night, the whispers kept them awake. They set rules. Who would be watching, where they would be watching. But every morning, more and more of their comrades would be gone.

There was nothing they could do about them.

But sometimes, those that were taken away found their way back. They told stories of being saved, carried away in colourless arms to be dropped off miles away.

Even more rare than the survivors are those who spot these creatures when they appear to be more human than they deserve to be. Some have been spotted wearing tattered clothes, others wearing things like caps and even headphones.

These Stalkers are some of the most dangerous foes, and also the most mysterious.

Controls
Grab: Grabs a player in contact. Once successful, it will grab hold of the player until you click again or your stamina runs out.

Consumes 10 energy per click.

Consumes 10 energy per second when the player is grabbed.

Shield: Emits a forcefield, preventing the Stalker from taking damage. You can move around with it active. Consumes 20 energy per second.

Adaptive Camouflage (Passive): If a Stalker stands still for a few seconds, they will go invisible. Invisibility is broken by movement or attack.

Survivors

 * The Stalker is very fast, follow the movements so you can kill it more easily.
 * Stay together with other survivors.
 * Communicate with others. If a Stalker is nearby, warn fellow survivors to avoid preventable accidents.
 * Playing in third person greatly lowers your risk of surprise ambushes and being caught by the Stalker.
 * Since it's tall and very easy to see, it should be easy to kill.
 * Be on high alert if you hear whispering.
 * If by any chance a Stalker is near you, you should punch or have a secondary that stuns.
 * Freezing or stunning it will immediately drop its victim.
 * An Icestaff, Icegun or Frost Knuckles can assist you due to its long freeze time.
 * If a Stalker throws you off the map, you respawn and do not die in the void.
 * This doesn't apply to Terminal Decay, Mogadishu Transit or Victoria Harbor as they're dead boundaries in-place on those maps.
 * You will also be respawned if a Stalker throws you into unswimmable water.
 * Occasionally, being dropped into Caved In water could kill you.

Zombies

 * Assist Stalkers by distracting other survivors, allowing them to grab a survivor with ease.
 * Jump from high points of a map with a survivor and let them go to kill them with fall damage.
 * Don't jump off the map with kidnapped survivors as it will respawn them.
 * Standing still will allow you to become invisible.
 * Very useful for the last phase of Arena.
 * If you are caught in a Pipebomb, you will lose invisibility.
 * If you capture a survivor, bring it to a Brute or a horde of Infected, as this should easily finish them.
 * If none of these are available, bring them to a Leaper or Edgar instead, as they will trap the survivor.
 * If there only a few to no zombies around you, try to put them close to a zombie spawn.
 * If a survivor is on lethal heights, you should consider throwing the survivor off the building to make them lose some health.
 * Not including No Mercy.
 * Separate survivors from a group in order to stop the group from killing you.
 * Since you can't kill players by dropping them near the edge or in water that kills, try using other environments such as a radiation pool, boundaries such as the rocks in 1930's Kingstreet and Victoria Harbor or the water at Panama Beach.
 * Use glass shards if available in order to do some damage to them.
 * Use the forcefield at spawn to prevent you from getting spawn killed.
 * Throwing survivors off the map in Rescue can delay them from getting to the Helicopter, making it worth doing so, most notably on Victoria Harbor.
 * Maps like No Mercy are great. Your dark figure, invisibility, and glass to force survivors into makes this map one of your golden opportunities.
 * You can also assist the survivors if you wish, via a method called the "Stalker Taxi". You can taxi a player in need of an escape from a dangerous area by picking them up and dropping them off at a safer area. Do not confuse this with Round Delaying which is using two or more stalkers to constantly keep the last player(s) alive, away from the horde, on a map with no time limit.
 * You can use environmental hazards, such as glass and the fire on the Panama Beach Boat to your advantage.
 * Stalkers cannot be bought on M.S Antares or Outpost 21.

Trivia

 * The Stalker is a returning mob from R2D.
 * It only had 50 HP, and it could regenerate health, but only one can be bought per round.
 * The Stalker is the only returning mob that has not changed in physical appearance at all.
 * The Stalker was inspired and based on a game named ₮h₴ ₲łⅰރčh.
 * When a Stalker has spawned, it makes a whispering sound.
 * The Stalker is the tallest mob, excluding bosses.
 * The Stalker is the second mob to have forcefield as an ability, with the first being the Brute.
 * Unlike the Brute, the Stalker can move while in the forcefield.
 * The Stalker will place one hand on its face while doing so.
 * This is one of four mobs that can incapacitate a player, the other three being the Leaper, the Edgar, and the Digger.
 * Before v1.1.4, this used to cost 60$ to buy.
 * As of 1.1.4, this mob cannot spawn naturally and the buying cooldown has increased from 1.5 min to 2 mins.
 * Stalkers can relocate after capturing a survivor.
 * For some reason, if you save a captured survivor from a Stalker, you don't get the reward that you get from saving someone from a Leaper or Edgar.
 * There is a glitch where a Stalker can go invisible while walking.
 * Originally, the Stalker would die whenever the survivor it held died. This was patched in v1.2.0.