This is a new mod from the same developer who develops the Deadpool Mod and Watch Dogs Hack Mod.
Controls: In the game, when you press X (x), the time will be slowed down (for shooting; when you press it again, it turns off); to shoot while jumping, you need to press Ctrl + W, D, A, S - in general, wherever you want, and shoot on the LMB (disable Ctrl fire in the settings, leave only the LMB). Pressing Ctrl again (without direction keys) disables the jump shooting mode. The ability can turn off by itself, as the scale will decrease over time.
Shooting animation is not configured. There is voice acting. I did not see anything like this, so I posted it.