Bro i have a good method that almost everyone uses to defeat Phil in phase 1 fight. What is that white injection called It was protophil I forgot the name but yeah you can use it to make him paralyzed. Then use revengeance. Now for the final phase 2 is a bit hard which you wanna do is try trapping him in a house or container so that it is hard for him to get up and sometimes gets him stuck. And then use the injection again to paralyze him and then revengeance.
I use 2 saves first save is to box him with millions of nuclear bombs second save just spawn like millions of bombs just bombs all around the map trigger it and boom you get the badge Note: you will get the badge but break your mobile phone or pc
All steps Step1: Spawn a Building on Static and block a door way so he should escape Step2: spam or place lot of Explosive. Step3: use Rpg or Landmine and then shoot it will Explode. And you will killed him there is 1 more thing you need to defeated him on phase 2 it will gonne be impossible
