Battle of Titan

"The hardest choices require the strongest will." "I think you'll find our will equal yours!" "Our?" "Piece of cake, Quill." "Yeah, if your goal is to piss him off!"

- Thanos, Doctor Strange, Iron Man and Star-Lord

The Battle of Titan was an attempt by a combination of Avengers, Guardians of the Galaxy and Doctor Strange, to ambush Thanos and defeat him.

Background
"I'm here to kill Thanos, he took my girl. Wait, who are you?" "We're the Avengers, man."

- Star-Lord and Spider-Man

In an attempt to counteract Thanos' plans, Iron Man decided to take the fight to the Mad Titan's homeworld of Titan, accompanied by Spider-Man and Doctor Strange, who had just been released from Ebony Maw.

Elsewhere, the Guardians of the Galaxy were also trying to defeat Thanos as he captured Gamora, so they headed for Titan as well. When they crash landed on Titan, Spider-Man was alerted on an incoming attack, which turned out to be the Guardians. The two teams then fought, each believing the other to be working for Thanos. When they cleared up their conflict, they then decided to work together and ambush Thanos, who they expected to be arriving soon.

Iron Man then came up with a plan, to which Star-Lord opposed to as Mantis then pointed out to the group Doctor Strange doing something odd. They asked what he was doing and he told them that he was checking every possible outcome of their upcoming battle, of which there were 14,000,605, but only one were they win. They all then prepared for Thanos' arrival.

Battle
"Magic! More magic! Magic with a kick! Magic with a-" "Insect!"

- Spider-Man and Thanos

Thanos then arrived on his home planet, where he was greeted by Doctor Strange and quickly realized that Ebony Maw had been killed. The two then had a discussion while the rest of the group hid in vantage positions, waiting to attack. Thanos told him about his history if his planet and how he plans to commit genocide across the entire universe with the assistance of the Infinity Stones. When he finished, Iron Man then crashed a giant piece of debris onto of him, which did no harm on him and he turned the pieces into an endless swarm of black crystals and hurled it at Iron Man, forcing him to fly around Titan to dodge. Thanos's right eye is then blinded by a web cotton from Spider Man and Drax quickly slashes him with his knive while Doctor Strange conjures a sword made of Eldritch Magic to engage Thanos in close combat. However, Thanos uses his superior skill and physical powers to beat them back, kicking Drax through several stones and blowing away Doctor Strange upon bringing down his Eldritch Magic shield with a kick. However, Star-Lord manuevers through Thanos's blasts with aid from Doctor Strange, who conjured platforms for him to jump on and shoots him before implanting an explosive on Thanos's back, which briefly stuns him. Thanos's gauntlet is then restrained by the Cloak of Levitation and Spider Man attacks him, only to be easily pinned down after landing only 2 blows. Thanos angrily calls Peter insect before throwing him at Strange. Iron Man causes an explosion around Thanos but Thanos is once again uninjured and absorbs the flame and blasts it at Iron Man using the Infinity Gauntlet. Thanos is once again attacked by Spider Man but he easily breaks out of his web and uses it to pull Spider Man to him before punching him. Suddenly, Thanos was hit by a Necrocraft, which had been revealed to be flown by Nebula who immediately attack her adopted father, while trying to find out where Gamora was, only for Thanos to swiftly beat her. At that moment, the group all overpowered Thanos, with Doctor Strange restricting the gauntlet, Drax the Destroyer knocking him down, Star-Lord restraining his other hand, Spider-Man webbing him up, Iron Man attempting to pull off the gauntlet and Mantis using her powers to inflict sleep upon him. As the group came to nearly defeating Thanos, Star-Lord then approached Thanos to mock him and demand the location of Gamora. Mantis then revealed that Thanos was mourning, which led Nebula to understand that he had sacrificed her for the Soul Stone. This then enraged Star-Lord, causing him to punch Thanos, causing Mantis to lose her grip, freeing Thanos. He then began to brutally attack the group, including destroying an entire moon and throwing it at them. Spider-Man then rescued the Guardians from the falling debris, while Iron Man and Doctor Strange attempted to defeat him again. Iron Man is quickly incatipated and Doctor Strange and Thanos fight for a while, with Strange holding his own until Thanos telekenetically pulled Strange to him and admits he is impressed by Strange's skill in Magic but asks on why did he not use the Time Stone, which Thanos deems Strange's greatest weapon. Upon crushing the Eye of Agamotto, Thanos realises it is fake and tosses him aside. Iron Man, being the last line of defence, attempts to defeat Thanos but Thanos easily defeats and breaks much of the armor before disarming Tony of his sword and griveously injuring him by stabbing him with it. Those then prepared to kill Iron Man until he was stopped by Doctor Strange who handed over the Time Stone so that Thanos would spare Iron Man. Thanos accepted and inserted the stone into the gauntlet, leaving him with only one more to collect, the Mind Stone. Suddenly, he was attacked by Star-Lord, but it was totally ineffective. Thanos then created a portal and headed for Wakanda. When Iron Man asked why Doctor Strange gave up the stone, he informed him that they were now in the endgame.

Aftermath
"He did it..."

- Nebula upon witnessing Thanos unleash the power of the Infinity Gauntlet

When Thanos arrived on Wakanda, he defeated all lines of defence until he got up to Vision. Scarlet Witch then destroyed the Mind Stone, killing Vision in the process, however, Thanos, now equipped with the Time Stone, reversed time and ripped the stone out of Vision's forehead, killing him again. With all six Infinity Stones, Thanos snapped his fingers, wiping out half of humanity. Back on Titan, they all regrouped after the battle, when Mantis pointed out that something was happening, right as she began to disappear. Drax, Star-Lord and Doctor Strange, who told him that there was no other way, also began to disappear, not knowing what was happening. Spider-Man then approached Iron Man, saying that he was feeling sick and that he didn't want to go, but then also disappeared. In the end, only Iron Man and Nebula were left, defeated on Titan. Nebula then stated that Thanos had succeeded in wiping out half the universe.