as an invader, never bow (emote) unless youve used a red sign soapstone
doing so is totally idiotic imho as you have just given ur enemy a free BS opportunity. you are invading for a reason and that is to kill your designated target, giving any advantage to your target means certain death in most cases
another one would be.... use everything you have to get the upper hand over your opponent. whether it be BS mastery or simply using the environment, as long as you get the job done then you are victorious whether your enemy says your useless and/or cheap (remember its you who got away with his souls and not the other way around)
i would like to give pvp advice on how to handle certain builds with certain builds (hope that doesnt confuse anyone) but since Dark souls is a very flexible game in terms of playstyle, id just say..... send me a message of your build and the enemy build that you are particularly concerned about, ima just analyze it for you and just send you the results (also better if you send your pvp area of choice)
...... honor players are mostly the losing players. why? cuz of all the rules you bind yourself to, estus chugging is legal since it is why you have it in the first place, running away doesnt mean your a coward but a smart tactician ready to retaliate at the moment your pursuer('s) make a mistake, and there is no such thing as a "cheap tactic" once you accept that everything is a proper way to kill each other, then and only then will you understand the mechanics of which this game was built on..... NOTHING IS FAIR
thats all for now and i hope most of you guys understood what im trying to say xD