Stalker

The Stalker serves as mobile heavy weapons platform in the Chimeran armies.

These Chimera vehicles are equipped with AA autocannons, a missile pod and an anti-personnel gun. This allows a single Stalker to prevent enemy air support on the battlefield. The machines' multi-legged locomotion also provides superior maneuverability over all forms of terrain.

A Stalker is heavily armored that shield it against catastrophic attacks. The only known weakness of the vehicle is the partially exposed power core on the rear of the hull, although a LAARK will easily take one down, no matter where it is hit.

Resistance 2
The Stalker in Resistance 2 seems to have been converted from a vehicle into a drone, as the cockpit has been replaced with a sensor node and a large red "eye" has been mounted on the front. It also produces an mechanical roar when damaged, unlike the earlier model. These changes may have been made in response to the British army hijacking the vehicles during the Liberation of Britain two years earlier.

The Chimera also develop a prototype Stalker, with far more superior armor and firepower, which appears Co-op campaign in Resistance 2. This type of Stalker is made to be a far more challenging enemy, a level boss, in Co-op, even against a full team of eight. Also, shooting the Stalker's power core does not affect the vehicle itself.

Tactics
An easy way to kill a stalker is with the Auger Rifle. The shield from the Auger's secondary fire will protect the player thus making the Stalker's weapons useless, and shooting through the body of the Stalker to where the exposed part of the power core is. In Resistance 2, there usually is a LAARK lying around for the player to use to destroy any nearby Stalker.

Trivia

 * The player have the chance to drive a Stalker twice in Resistance: Fall of Man; in Bristol, Parting ways, and in Thames, Giantslayer.
 * The Stalker is based off the landstalker from Ratchet: Deadlocked (Gladiator if from Europe), and they both function the same, and have machine guns with a secondary mortar attack.
 * At the first mission of Resistance 2 just after you get off the trench, and before entering the airplane bunker with Blake and finishing the mission, there is an open view of a Stalker a while ago that tried to kill you, and you can destroy it by sniping it with LAARK fire. The ammo is unlimited due to the fact that there is an ammo crate for the LAARK lying around before you fire the last shot to the Goliath.