4th Boss "Naga Queen" in India Dungeon for lv29~36; I killed it at lv34
 

1) Easy~Tough Fight
2) Another Monster in Boss's Room. It can interupt during battle, or begins as Boss's
Party member. The fight gets difficult with 1vs2. Make sure attack the Boss when the
Monster is far away.
3) Another option is start the battle and use a scroll called Summon monster Scroll. As
long as it activate before the monster join Boss, it will join your party. The fight will be
easy after then.

5th Boss "Spider King" in Nest of Insects for lv37~43; I killed it at lv38

1) Easy~Tough Fight
2) Another Monster in Boss's Room. It can interupt during battle, or begins as Boss's
Party member. The fight gets difficult with 1vs2. Make sure attack the Boss when the
Monster is far away.
3) Another option is start the battle and use a scroll called Summon monster Scroll. As
long as it activate before the monster join Boss, it will join your party. The fight will be
easy after then.

6th Boss "Naraka" in Mohenjodaro's Grave for lv44~51; I killed it at lv43

1) Easy~Tough Fight
2) I let 3 Gunners to clear the middle raw, and then freezed 1st and 3rd line with Biking
and my Freeze skill.
3) I let Female Shaman cast Berserk on 2nd line for 3 Gunners.
4) Biking and I kept using Freeze on 1st and 3rd line.
5) Every monsters got wiped out by 3 Gunners at 5th turn.

7th Bosses "Elizabeth" and "Dracula" in Dracula's Castle for lv52~58; I killed them at lv52

"Elizabeth"; I killed her at 2nd try

1) Easy~Tough Fight
2) Remember: Do not use skill on "Elizabeth" because she get heal from it. Biking's
Freeze is OK as long as you use it for stun.
3) I used same strategy as 6th Boss "Naraka"
4) I also used Silence Scroll just in case.

"Dracula"; I killed him at 3rd try