'Alright,Steve,Bruceyou'll go to 2012 in New York,Clint,Natasha,you'll go to the location of the Soul Stone,Nebula,Rhodey,you'll go to the location of the Power Stone,and finally,Doomguy,you'll go to this unknown diminsion,and find the Reality Stone.'Tony instructed The Avengers on where they should go to find the stones

At last,Steve said,'Alright,people,we lost a lot of our loved ones,friends,families over the past five years,some will forget about them,not us,not us.We also got only one shot at this,so we must have a 100% success,alright?''

'Yes,Sir!'The Avengers responded to him,along with Doom Slayer doing a salute to him.

And the hunt for the stones begins...

The Plains of Hell

The Slayer arrived to Hell,the place he fought the demons of hell for a million years,he can still see the scars he made to this realm.

But then,Vega interupped him by saying,'According to the UAC's map of Hell,the reality stone is located in a facility 150 miles away from your current location.But beware,the facility is heavily overran by demons.'Doom Slayer smilied under his visor,he can finally do the thing he enjoyed the most,Ripping and Tearing these demons,until not one demon is left.Just then,10 imps spawned and they roared in fear in the sight of the Doom Slayer,he took his Super Shotgun from his warp pack and prepared his meat hook attachment,just then,the imps engaged in combat,and suddenly,Doom Slayer's Meat hook attached to one of the Imps and swiftly,he killed the two imps with one shot from his Super Shotgun,and then,he grabbed an imp in the head and ripped it apart,and then,he grabbed his Heavy Assault Rifle and shot the imps with a powerful bulletstorm with some micro missles from the rifle,all of them,exploded in impact,and quickly and brutally,he killed all ten demons,but then,the demons sent more reinforcements in the form of 5 Hell knights,2 Barons of hell,and 1 cacodemons,and Doom Slayer took his shoulder launcher and his Gauss Canon,which he named it Ballistia and quickly and powerfully,he killed all of the Demons.

And after all of the demons had been killed,VEGA said,'Well,I according to my calcations,the demons inside the facility wouldn't be much of a problem to you.'

After a heavy killing spree of demons

After the long road,The Doom Slayer finally arrived to the facility to take the reality stone,but the moment he opened the doors,He was ambushed by the Cyber Demon that for some reason has broken out if his cage,then he took out his Shotgun and shot the giantic demon,but that dosen't seem to do much work,other then pissing off the Cyber Demon even more,making his attacks more aggressive as it swung its sword and three flaming trails took off to the Slayer's direction,and he realised he need much more that poor excuse of a shotgun,and he blasted a shot of his Ballistia and the demon flinched but that is not enough.

No,

He needs something much stronger

That's when he realised,he has the BFG 9000 inside his warp pack,so he took it out,and aimed the Gun to the demon,and a big flash of green came out of the gun and straight to the cyber Demon and the demon flinched,a lot and he got close to the demon and he fired another shot,and Boom!there goes the Demon as its guts exploded in a gross manner.

Then,VEGA said,'We have arrived.'And the reality stone is all for him to take,but there's a another artifact that distract him from the stone,

The Crucible

The sword that helped him fended off hell's forces a long time ago.

Undoubtly,he also grabbed that along with the reality stone,lastly,he used a Quartum generator to get back to the present.

But unfortunately,when he got back,he learnt of the tragedy with the soul stone.