[b]Act I:[/b] * Open world sandbox/survival on Requiem* - Chief crashes on Requiem, big section of ship acts as a home base where he is sending a distress signal - Cortana has flashes of Rampancy - Big open area where you must look for other parts of the ship that have ammo/supplies, parts that can strengthen the signal - Enemies are from the Storm faction. Includes an explanation/background story with their data archives from their outposts once you clear them out - Prometheans aren't introduced but heavily hinted at while exploring (I.E. Storm soldiers being disintegrated, terminals) - Ending to Act I includes defending your outpost against Storm battalion using various weapons and vehicles, at the end you are attacked by a squad of Prometheans only to be saved by Lasky followed by a squad of Spartan IV's, you then go unconscious from exhaustion. [b]Act II[/b] *More mission oriented* - Chief is brought onto Inifinity - Captain Del Rio acts similar to how he is in Halo 4 - Receives the new armor while on board - Brought up to speed on conflict with Storm and the mission of Infinity, informs them of Promethean appearance - You go on a series of scouting/ search missions for missing personnel previously deployed crew of Infinity and forerunner artifacts located in Storm bases/posts; You fight both Storm trying to protect the artifacts and Prometheans trying to steal them back - Chief is put in a squad and starts to bond with the members of his squad, being really close at the end of this act - Cortana's rampancy is elevated, even endangering Infinity members while on missions - Once artifacts are collected, they are revealed to be pieces that join together (similar to Janus key) - Storm faction takes Infinity by surprise with massive attack, boards Infinity and steals the combined piece - Infinity locates and goes after the location to which Jul M'Dama has brought the piece - Chief takes a squadron of Spartans into a mysterious forerunner architecture, revealed to be the Didact's crypt - Chief and squad battles waves of Storm, is just out of reach of Jul and his team, Jul then awakens the Didact using the key - Scene is similar to Halo 4 when Didact awakes, except he demonstrates his power by violently killing Chief's squad right in front of him - Didact has The Storm join him, then leaves Chief for death by setting a destruct sequence for Requiem; Chief warns Infinity and initially chases the Didact while fighting off Storm Air defense including Phantoms and Banshees, but then heads towards Infinity to regroup and follow the Didact - Chief makes it to Infinity, jumps into slip space and escapes Requiem's destruction, Chief is devastated by his failure to protect his squad he has grown close to, and returns to Earth [b]Act III[/b] - Del Rio is commissioned to pursue the Didact and stop him, but does not want Cortana to go because of her rampancy and nearly costing the lives of crew members - Lord Hood commands Del Rio to take her because of her forerunner knowledge, reluctantly obeys orders - You go to the station near Installation 05 where the Didact is attacking while searching for the composer - Your mission is to evacuate the people aboard and stop the didact - Del Rio dies protecting Cortana while on the station, his final words basically saying that he's realized how much of an asset she is and has John promise to protect her for the sake of humanity - Infinity is immobilized and the station is destroyed, John goes after the Didact using a Sabre and follows him through slip space - Didact goes to installation 00 to the place where Medicant Bias is kept (We don't know who he is yet), remarks about his fall from grace and insults him - Chief fights his way to the room through waves of Promethean and Storm only to realize he is too late - Chief then takes the sabre to catch up to the Didact, except Cortana's rampancy makes her take over his ship and crash it back onto the surface, causing Chief to be stranded - All seems lost now that there is no way back, Cortana is distraught and wants to end herself, but then Chief finds a terminal and Cortana is able to open a direct portal to the Didacts ship, but seemingly at the cost of her life - She does it despite John's pleas not to, and he ends up on the Didact's ship ENDGAME - Chief fights his way through the control room while being warned by the Didact not to, similar to the last mission - Turns out a squad of Infinity has also boarded the ship, including Lasky - Chief must make a choice between saving the squad or stopping the Didact, chooses the squad - Orders squad to get off the ship and to safety - Faces the Didact, Didact gets the upper hand - Didact makes Chief watch him begin composition of Earth, but Cortana appears and stops him similar to Halo 4 mission except we see him die - John has same moment with Cortana from game, she reveals that something (Later revealed to be MB in Halo 5) in that system on the ark was able to relieve her of rampancy and sent a fragment of her to the ship as well, gives John a cryptic message hinting at finding her (Halo 5) then activates self destruct sequence of ship - John gets back to Earth, has talk with Lasky, leads onto Halo 5 <END> Thoughts?