Ok so i cant tell you exactly what to do...but i can tell you what to buy.Ok the first thing you buy as soon as you get enough money is the shield battery under the utility equipment.After geting that upgrade, get the flux capacitor under the defensive equipment.The sheild battery alows you to always spawn with 25 percent shield and the flux capacitor makes you take 20 percent less damage when you have a sheild equiped.After getting those two things, you need to save up to buy the Holy GraiL,the most powerful sniper rifle.It has all circles for damage , range, and accuracy.And as a bonus it has a fire modification equiped.So in battle when you start with your ok pistol, try to find this sniper , or the rocket launcher, because the rocket launcher is also good at quickly killing, and the shield will help you get to these weapons.I hoped this helped and have a good day everyone.