Time Variant Assassin (Alternate MCU Story)

Assassin

A group of thugs were in the streets of San Francisco. They had just killed two people and badly injured one other. They took their things. The thugs weren't expecting someone to be watching them. The man watching had knocked down a garbage can to startle them. The five thugs looked at it. Then they heard a scraping on a wall. They turned and saw claw marks on a brick wall. Then multiple bikes had fallen in front of them. They started to get freaked out and one with a gun started shooting. "What the hell are you doing?!" The lead asked.
"There's someone watching us. What do you expect?" He said in response. Then they heard a loud tearing sound. They saw a rope on the ground in front of them. They went to investigate. Then the gun was snatched out of the shooter's hands. They all turned and pulled out knives to see a man in black clothes; black pants, a black shirt that covered his body and arms along with a leather jacket, black gloves with claws on the finger tips, and black shoes with white on the bottom. His face was covered in dark eyeshadow and he was wearing a mask to cover his mouth. "Hello, batards." The man said. He ran at them and began a very violent fight. He started by slashing the leader's throat with his claws. One tried to stab the assassin in the neck, but he did a backflip and kicked him in the back of the head, killing hum. What they didn't know was he had a dagger on the foot of his shoe. He then kicked another one of them square in the testicles, then shoved his clawed fingers in his eyes before he could feel any pain. The other two tried to run from the man, but they didn't make it far. The man shot one in the head and one in the Achilles heel. The still alive thug went down, screaming, and started crawling away. The assassin stomped on the thug's hand and then kicked him on his back. He then pulled a knife out and stabbed the man in his wrist. He aimed at the guy's face and pulled the trigger. Click. The assassin threw the empty gun. "You only kept three bullets in that?" The assassin asked.
"That was only two bullets." The thug said.
"But you shot one when i arrived." The assassin told him. He reached into his holster with a severed hand sewed onto it. He pulled his own pistol out and pulled the trigger, shooting the man in the head. He put the pistol away and approached the injured man. The man grabbed the assassin by the ankle. "Help me..." He begged. "Call the police..."
"You have lost too much blood. It is too late." The assassin said. He raised his claws up and slashed his face, killing him. He grabbed one of the thug's knives and held it up, looking in his reflection. "Never show sympathy, David Demis. Never show sympathy." David told himself. He threw the knife away.

He became an assassin to kill criminals. And if anyone was suffering, he'd end it for them.