I am listing them in order as the same as the gallery which should be the order you should be fighting.note that every boss will have new attacks after their hp got reduced more than half.Also i am putting the colours for the map so you know you are on the right track
1.Troll pig man
Simple moves,slide can dodge his fire breath,his jump(when he raises one hand),his dash grab(two hands),his attacks are obvious,you shouldnt have any prob
2.Teddy bear(No H-scene)
You should have your sword to level 2 charge now,this is a good boss to pratice your sliding skills,his sword throw wont reach far,you can slide through his straight dash,and spinning cut,thorugh half hp he will point out a gun and shoot you which hurts lot no matter how far you are,you can slide through it with good timing when the moment you see his gun is done pointing out,just stay far and charge your sword to lvl2
3.Aluarune
Slising works wonder here as well,almost same strategy as b4,this always pratice your sliding,when you see the three move backward,thats your time to slide,her big plant cock cant reach far as well,same goes for her grab until half hp,she can extend her grab so you might have to watch out for yourself
4.Scylla mermaid
Slide to dodge her laser(half health) and projetiles,just watch your timing,you go attack her straight on everytime she comes out of water,watch out for her close range grab,not hard
5.Queen Lamia(Lower right)
Shes big,but doesnt have too much move,her tongue attack is her grab move,the place is narrowed and small this time ,you can still slide but make sure you jump afterwards,else you will drop into lava which hurts,she have a big tail swipe as well which is hard to dodge but can be slide,the trick here is to stand at the rock near her bottom,and spam attack,her combo cant reach you but her tongue and tail will so watch out,if you can place yourself properly near her belly without getting hurt and move forward and back while attacking,you can cause her to keep switching to left and right without her attacking
6.Succubus
Slide through all her attacks,her grab is when she is flying down around you,through half hp,she will start going to the side and unleash quick wave of attacks which is hard to dodge,the best is to stop using slide and spam the jump and somersault combo at the top till she is done,everytime she used a skill or attack she will return to the middle,after her wave attack,land onto the left or right platform at the centre at spam or charge
7.Sugar Flan?(Or caramel? This I am not sure)(Right Pink)
She throws tiny projectiles which is hard to see,my tips is to use the somerjump combo infront her,she has a long hand grab as well,watch out when she turn into slime form,where she jump randomly around the room,just keep sliding around,thats her grab,she will also summon two slime which jump far and one jump high,somerjump above her works as well,her random jumping becomes big when below half hp shouldnt be a problem if you have good accesories,if you really cant beat her i suggest beating the vampire girl first to get the demon sword(Hell sakura?) which has strong charge att
8.Vampire girl(Top left red)
She is much easier to fight overall,her bats wont reach far,slide through her and her projectiles,through half hp,she will have red mist around her,theres where you need watch out,when she has red mist and throwing a projectile,she usually dissapear before throwing it and appear at random place and throw at you again,just watch out for those and you will be fine
9. Yako(Top red)(No H-scene)
Her attack are simple as well,and if you have the demon sword,with at least two charges and good accesories,she can die in 2-4 charge attacks,she usually throws punching attack and a wave back at the end so make sure to slide when she reach end of hallway,her jump attack can be easily slide or dodge as well,later she will have similiar projetiles from boss before,easy to dodge as well,nothing to hard
10.Final Boss(No h-scene)
Dodge the projectiles with slide as well,the attacks are fast and similiar to the vampire girl and yakos,dodge and charge attack to win,if you can beat Yako you should have no problem with this boss