Story: In the future, scientist Kurt Mullins created his Super Twin (Experiment 04) within the Data Cloning Institute laboratory using advanced cloning technology but his real body died unexpectedly. The Super Twin was Mullins' exact clone, which had the most unusual of characteristics; he was near-superhuman, in addition to being physically immaculate. This Twin was immediately imprisoned in a special holding facility by DCI. It was the hope of the company that he would be a powerful military weapon. Super Twin had all of Kurt Mullins' memories, locked deep in his clouded mind. DCI assured him that the loss of his memory was a temporary side effect of the cloning process. They quickly attributed it to a flaw in his creation process. However, this attempt at deception proved unsuccessful. It took little of his superior intellect to come to a decision. He was going to escape.
These big open areas aren't very fun for shootouts. This gameplay looks like you spent most of the fight standing out on no man's land getting shot at. I'd say add a lot more trucks, crates, etc. to give the player some cover. You'd also want to place pickups in those places since players will naturally gravitate to them and be happy to find resources there. It would also be nice to have verticality, maybe allow the player to go on top of some of the smaller structures you have. That's my advice for shooters.