First off this is a good page to look at for weaknesses:
Voidwatch Weaknesses
LQ = Low Quality, also sometimes 1 is used. This means 1 random temp item may be recharged and it will terror the mob for a short time.
HQ = High Quality, also sometimes 3 is used. This means all your temp items will be recharged and it will terror the mob for a longer duration then the LQ.
EV = Extremely vulnerable, also known as 5. This recharges all temps and terrors the mob for the longest time.