Only game mechanic not a full game

configure that gun to fire an attached rope which would allow the character to pull around any physics-enabled object it hooks on to according its weight slow or fast it will be grapling hook system from the scratch, i have no animations or models, you should make all of them you can use unreal engine FPS file.

I want exactly the same system in that video please watch this video and if you can do %100 same you got the job.
https://youtu.be/9T1syr5HFD4?t=396