This mode is so much fun its brill, I love using the dog zombie. IDK what to advise really, I use offence one but I dont know how good it does. I thought co op was fun but agent hunt mode beats that hands down.
My favourite re game is re6. Yes it has flaws but its basically a better version of re4 and re5.
I always get paired with someone playing Amateur who just camps the spawns until I leave...
I haven't looked into it, do campaign players get bonuses of some sort when they kill player creatures?
They get an health spray each time.
That's not entirely true.
There have been several instances where I killed an infected player, only to find they didn't drop anything at all. First Aid Spray is one of the most common things, but they also carry grenades, red herbs and remote bombs.
Actually, if you're not playing with a complete idiot, leaving the Agent Hunt turned on is way more helpful than it is hindering. Especially on professional. Those items have saved my ass several times.