Halo 4 players can take part in Challenges, specifically crafted objectives within the game, to gain bonus experience points (XP) which can be used to advance their Spartan Rank. Challenges can occur on both a daily and a weekly cadence, spanning Campaign, Spartan Ops, and War Games modes. Additional Challenges will be offered through Waypoint outside of this scheduled cadence. Challenges will vary from time to time, but current progress can be observed under Career > Challenges within the Start menu.
Throughout the course of playing Halo 4, players are rewarded as they accomplish various tasks in the game such as the effective use of a particular weapon or the neutralization of a specific enemy type. These awards accumulate as they are accomplished, eventually rewarding the player with a Commendation. The type of Commendations available to players may vary, but one’s current progress can be observed under Career > Commendations within the Start menu.
During their career as a Spartan, players are offered Specializations through a variety of channels, allowing them to enlist in specific rank paths that come with armor sets, mods, emblems, and a variety of other components. Once a player has advanced through the standard fifty (50) rank levels allotted to Spartans, they will have access to a selection of Specializations. These paths are composed of ten rank levels each, which the player, once opting for the Specialization, must advance through in order to improve their rank and before being allowed to enlist in a separate Specialization.
Through both War Games and Spartan Ops, personnel can effectively rank up, unlocking items, such as armor kits, components, and skins, for use within their custom loadouts. What’s more, Spartans earn points while ranking up that they can use to purchase items to improve their combat performance and abilities in the field.
Stats on performance in the field are held within a player’s Service Record. This record retains details on the player’s rank and his progression to the next rank, as well as his current balance of Spartan Points (SP), which can be used to purchase weapons, armor abilities, and armor mods for the player’s Loadout.