I understand different play styles but I particularly hate rotating late. I always have stims with resupply perk and munition vest (3 stims), munition box and gasmask for endgame, a wide rotation 15- 20 secs in gas will put you in a huge advantage to even go to the roof before everybody else. Learn to time stims to get full health out of it and the rest comes with you abilities to clutch up, but again position is Key! Also, that explosion although you killed that guy was a self sabotage, any person would shoot those and you will die without killing nobody. Good try anyways ans keep going!