bosses that i find easiest are:
Royal Rat Vanguard
Prowling Magus and Congregation
i know right, every single time i ran towards the fog door i got invaded but i was just fast enough to enter the boss room xDI hated this boss so much. Died like 10 times with my Drangleic Sword and Shield. I got frustrated so I pulled out my Demon's Great Hammer and 2 shot all of em. Thankfully the distance from the bonfire to the fog door was short so I bypassed all the invaders. I think I would go crazy if I had to fight invaders every time.
on a sidenote i also fought my very first cheater there. some dude called Stockings that had 17.5 hour playtime on steam, yet gave me 580k souls after i beat him. he needed like 30 hits to die so he must have cheated himself to max level or something.
thank god i use a little mod called Dark Souls 2 Auto Backup Tool i grabbed from the nexus which copy/pastes my save file every 5 minutes so i could roll back. cause those 580k souls might be nice but will also **** up your soul memory.
Latest Video from my Livestream of Tales of Hearts ^.^ Quality is ... lala .... its watchable .. ^^
Working on unlocking Crystal Tower now...