This game would be amazing if we were in the early 2000s
but it's 2019. This game is the epiphany of laziness. The graphics are ass, there is no game play, and the hitboxes are god awful.
It seems like a fucking scratch game
First, you need to fix the hitbox and map. They are pitiful at best. Why not have a scrolling map that has multiple high and low spots to fight from.
Second, weapon variety is a must. Why not have a shotgun that is good at close range, and bad at long range, or a sniper which has a pitiful firerate but an amazing long range potential
Third, Put this game on a server and have a multiplayer style thing. You could have a 3v3 or a 1v1v1v1v1v1 or something like that.
But, as of now, this is a lazy awful game.