Quick question, if you have like 15 hp left and you get hit by like a full charged (Shepard) sniper shot. Will the person you link to only take 15 damage or will they suffer the full effect of the sniper shot? Can't this also be used to troll teammates like ones that use cloaking or use a hitscan weapon?
depends on how hp is calculated.
if the hp is in the negative, (ie after an overkill shot) and then the link damage is calculated, and then the death event is called, then yes they will suffer the full effect.
If the hp is in the negative, then the death event is called, then the link would never be calculated, and the other person would take no damage.