Damage Cancel, if u watch the enemies hp sometimes u will see them "heal" which means an attack was cancelled out by a weaker one making it look like they healed, happens with a lot of techs and weps
I think the most important thing is make friends, u get invited to games which will help u get geared, especially now that an event is on is the time u want to farm
How do the drops affect multiple clients in the same game? Anytime I had multiple characters only one could get items the rest had 0 drops even throughout the entire map?