#Half life decay walkthrough series

Decay has a ranking system for all of its nine missions, ranging from F (worst) to A (best), based on accuracy, number of enemies killed, and damage taken.

#Half life decay walkthrough series

The game is also unique in the context of the Half-Life series by being the only game divided into separate missions, instead of a single unbroken narrative. Various puzzles and combat situations throughout the game require the co-operation of the two characters.

Green, the game is intended to be played by two players in split-screen. While it can be played by one person, swapping between the roles of Dr. Unlike the other narrative-based Half-Life games, which are single-player only, Decay is designed for co-operative play. At this point, the screen fades and the mission is declared a success. The two player-controlled vortigaunts battle through marines and Black Ops in the underground Black Mesa complex to find the orange crystals in the back of a military van. The unlockable Vortigaunt mission provides background information explaining how the Xen Crystals used by the rift-sealing machine in Half-Life: Decay are acquired and used by the Nihilanth during the final boss battle in Half-Life. Despite this, Cross and Green are able to return safely and Keller congratulates them on their success. However, after activating the beacon, both characters are caught up in a 'harmonic reflux', a distortion caused by the rift. Keller tasks Cross and Green with activating this set of prototype equipment, a displacement beacon, which through the satellite may be able to seal the dimensional rift. The satellite, which is launched by Freeman in Half-Life, is used in tandem with ground-based equipment to significantly weaken the effects of the resonance cascade. After resetting key equipment to prevent a second-dimensional rift, the two are tasked with preparing a satellite for launch. The military arrives and tries to remove all personnel as well as the alien force. Once reunited with Keller, Cross and Green work to seal the dimensional tear to stop the invasion. Rosenberg elects to stay behind to meet with the military on arrival and Cross and Green return to Keller. However, the military is ordered not only to contain the situation but to silence the base by killing its employees. Cross and Green escort Rosenberg to the surface, where he sends a distress signal to the military. Keller and Rosenberg agree that Black Mesa cannot deal with the situation on its own, and so decide to call for military assistance. When Freeman inserts the specimen into the scanning beam, however, it triggers the Resonance Cascade, causing massive damage to the facility and teleporting alien creatures into the base. Rosenberg to pushing the analysis equipment beyond its design capacities, Cross and Green are assigned to assist in setting up the experiment for Gordon Freeman. Keller, who is readying the day's analysis of an unknown specimen. Green fighting a Vortigaunt.Дecay begins with Gina Cross and Colette Green arriving at the Anomalous Materials Labs at Black Mesa Research Facility and reporting to Dr.