I got a lot more invasions this time, and it was a lot of fun. I found that the best way to get the highest amount of pvp was to just summon some people and run them through from the first bonfire to the second. That would usually be two reds invading, and after that mayhem I could just use the red orb and it would work no problem. If I only did invasions it could take a long time before I got anything, probably because there are more invaders than people summoning.
Some notes about the character classes:
Knight:
I started with this, and it's probably the easiest to use, and with a greatsword you could just 2hr1 stunlock in pve and pvp and I think it might even give hyper armor during the swing. The short sword was also quite powerful and easy to r1 spam in pvp. The sword art seemed pretty good too, but I found the greatsword sword art a lot more fun, and you could time that better.
Northern warrior:
The axe was brutal in pvp with 2hr1 stunlock combo. The swordart r2 was quite powerful, but a bit difficult to time and usually it was a trade. Otherwise the axe moveset was a bit simple.
Cleric:
This was probably my least favorite class, mostly thanks to the boring mace moveset. It had a sword art that gave you hyperarmor for a few seconds which could be useful for some anti-gank scenarios, but otherwise the range of the mace is poor. The hyperarmor also worked with the casts, and the lightning spear seemed to track very well against people who tried to roll behind my back.
Assassin:
The spear was actually pretty good in pvp, and using the 2HL2 to catch people rolling away or commiting to a long animation was very useful. Usually spears have really boring poke poke tactics, but at least this time there's some variation to it with the timings. Out of the spells the only really useful spell was the magic sword, though fighting against a gank with mage spamming magic was pretty much impossible.
While the greatsword was a powerful and easy to use, the scimitars were unfortunately quite weak. They really needed stuff like sacred oath and resins to deal significant damage, even if you could get the l2r2 swordart to connect.
I liked the change of resin buffs only lasting a few seconds and fast to use, though maybe the time could be slightly longer.