High end gear to aim for?

[Kriegstofu]

the explosives etc.. There are so many things that will get through your shield and harm you. And actually you can also trade health for a hit or two on a bot. 

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+ Updated.

wait does that mean that a better armor protects against thors/siegemasters fire?

and what do you mean by trading health? do RGs get a bit of Health when killing a bot?