Final Scoring added

Hello, 

been a while, I may or may not have gone a couple weeks of VERY minimal work on this project honestly lolol 

Currently I added a tracker to give a total time spent alive, along with total kills and also breaking down what type of mobs you kill;

AND if had not mentioned it before i did add a scaling dddiulty along with the addition of a mob that shoots that starts spawning in at t 2 min mark