Running Bulwark - I notice that I get tick damage when walking into shock areas ? Is this the case ? I also seem to be taking random large amounts of damage when parrying and shock?  Anyone experiencing this? 

Are you in PvP or Ops? I'm mostly on Ops and it's a no (? like 80% sure?), but I went and played PvP to clear 100% acheivements last week and noticed I seemed to get shock damage from every one.

There also seems to be friendly fire from my teammates shock grenades.

You do not take damage by standing in teammates shock nades, as well as not getting damaged (just knocked back) by other types of nades thrown by allies.

Everything you throw yourself will damage you if you stand to close or in the shock nades aoe.

the same goes for exploding barrels etc. When shot and thus exploded by your teammates you will be knocked back, but not take damage.

When you shoot and explode them yourself, you will take damage (a lot).

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DerKiesel wrote:

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When you shoot and explode them yourself, you will take damage (a lot).

Which makes Melta Bombs dangerous. Because, they are laying around and detonate when shot at. Just yesterday saw a Brother die on one of those (who did not drop that bomb himself).