There are four levels of difficulty in campaign mode: Easy, Normal, Heroic, and Legendary.
developed by an internal team at Microsoft Game Studios known as Hired Gun.
The game features a new game engine, as well as using the Havok physics engine; added weapons and vehicles, and new multiplayer maps.
A high-definition remastered version of Halo 2 was released as part of Halo: The Master Chief Collection on November 11, 2014, for the Xbox One.
Players use a combination of human and alien weaponry and vehicles to progress through the game's levels.
Once activated, each skull has a specific effect on gameplay.
For example, the "Sputnik" skull found on the Quarantine Zone level alters the mass of objects in the game; thus resulting in explosions being able to launch these objects across larger distances.
The player alternately assumes the roles of the human Master Chief and the alien Arbiter in a 26th-century conflict between the human United Nations Space Command and genocidal Covenant.
After the success of Combat Evolved, a sequel was expected and highly anticipated.
Among Halo 2 The game received critical acclaim, with most publications lauding the strong multiplayer component.