Marvel's Superman [Completed]

While playing an online game, after Luke bought an SSS rank gift card of Superman, he found himself in an unknown yes very familiar Marvel Universe. And with a twist of fate, the SSS rank gift pack has also come with him. After he started to do workout and exercise, he found that the loading screen to unlock the gift card was slowly increasing. However, after reaching 99%, it has stopped moving forward. And when he found the chance to get his hands on the Super Soldier Serum, will he take it? And will it be enough to push the bar till 100%? If no, then how will he survive in one of the most dangerous worlds? If yes, then will he be the Marvel's Superman?