Halo Infinite is paving the way for a new campaign co-op system for the series, by allowing all four players in the fireteam to make shared campaign progress. You'll each need to designate a save slot before starting, which will then allow the game to autosave your progress as you all play. The save slot will be usable for any solo or co-op play after the fact, but when you do party up with your friends again, the game will automatically load you into the furthest part of the game each player has reached on that save slot.

Due to Infinite's open-world setting, 343i has added a 1,000-foot tether for all players, so you'll not be able to run off on a quest of exploration while your pals are fighting for their lives. If you do walk off too far you'll be killed for "going AWOL," but that's if your teammates don't decide to take advantage of the new friendly fire feature to kill you off first. Enemy difficulty levels will scale to the number of players in a fireteam, so your participation will greatly help out your friends, whereas your need to constantly disappear on a jolly might entice them to fire a rocket at your arse.

Co-op lobbies will allow players to select any Skulls they've found on that save, even if only one of you had picked it up. Each collectable can be found and collected by each player, though, so you can put together a group collectable run if you so wish. Even better, if you do miss a collectable from a mission you've completed, or fancy switching to a different mission mid-game without losing the progress you've made in the current one, the fireteam leader can use the new Mission Reply feature via the TacMap — this will also be available in the solo mode as well.

Halo Infinite is paving the way for a new campaign co-op system for the series, by allowing all four players in the fireteam to make shared campaign progress. You'll each need to designate a save slot before starting, which will then allow the game to autosave your progress as you all play. The save slot will be usable for any solo or co-op play after the fact, but when you do party up with your friends again, the game will automatically load you into the furthest part of the game each player has reached on that save slot.

Due to Infinite's open-world setting, 343i has added a 1,000-foot tether for all players, so you'll not be able to run off on a quest of exploration while your pals are fighting for their lives. If you do walk off too far you'll be killed for "going AWOL," but that's if your teammates don't decide to take advantage of the new friendly fire feature to kill you off first. Enemy difficulty levels will scale to the number of players in a fireteam, so your participation will greatly help out your friends, whereas your need to constantly disappear on a jolly might entice them to fire a rocket at your arse.

Co-op lobbies will allow players to select any Skulls they've found on that save, even if only one of you had picked it up. Each collectable can be found and collected by each player, though, so you can put together a group collectable run if you so wish. Even better, if you do miss a collectable from a mission you've completed, or fancy switching to a different mission mid-game without losing the progress you've made in the current one, the fireteam leader can use the new Mission Reply feature via the TacMap — this will also be available in the solo mode as well.