In this blog i will have a video of me beating all the bosses well i will eventually but just a few for now.
I will be beating them all with random characters and some of the bosses might be NG+ and some of them not. 

Looking Glass Knight.

He does look intimidating and is fairly hard but he gives you lots of time to heal when you need to.

Covetous Demon which is super easy fight 

Old Dragonslayer (NG+) which some of you might remember from Dark Souls 1

Dragonrider (NG+)

Executioner's Chariot

The Last Giant

The Pursuer who can be a lot easier if you are good at parrying because you can parry him in front of the ballista then use the ballista which nearly kills him. But i didn't even try parrying. 

Flexile Sentry. Flexile Sentry is easy boss fight even without Lucatiel and i had her summoned so i can get her storyline done and eventually get the achievement for it. 

Ruin Sentinels. I higly recommend summoning Pilgrim Bellclaire for this fight because it simply makes the fight easier.

The Lost Sinner. Had Lucatiel summoned this for her storyline and having her made the fight go fairly quick.

Skeleton Lords.

Mytha, The Baneful Queen. Really really really easy fight if you summon Jester Thomas to help you.

There is a catch to this fight though, the whole floor will be covered with poison unless you burn the windmill next to Central Earthen Peak bonfire with a torch.

Smelter Demon. I would highly suggest summoning Lucatiel for this fight because she tanks like a boss and Smelter Demon does so much damage. Almost died few times on the video.