Secret bosses

Chapter 2: Slurge

After you fight Barbuda, (make sure you haven't used the big red exploding barrel, which is being blocked off by two rows or normal ones) take the large exploding barrel and put it infront of a crack in the wall to the north east, blow it up and go to your new location.

He's not very hard, quite annoying due to the many slimes he spawns around him which all give different effects but it shouldn't be to much of a problem.

Upon defeat he will drop a load of blue ranked materials.

Chapter 5: Glurbongle

To fight him you have to do the side quest on chapter 2 (in which you return the child to its mother) and then get to Chapter 5 without returning to the lobby atall. When you make it, different to if you hadn't done the previous step, the mother will be there, claiming she seems to have lost her child again, and requested if you would look for him. Now go to the very northeast and head for the sewers. You will now have to fight through several rooms intill you make it to this boss.

Glurbongle follows the race of his allies of some kind of weird fishman. He himself is quite an easy boss being a simple fighter extreamly simular to everyone you fight there, however also a very time consuming boss as every now and then he will jump to a different platform around him (which you can not make it to) and summon four minions to attack you, wait a while and then jump back. The only real thing to be cautios of is his soul charge as he sends reapeted blasts of white towards you which you can not block, and must evade but going left and right. This is a huge problem in harder modes as just one dirrect hit can take out all your hp and you wont get anouther chance to fight him, unless you go back to chapter 2 and do everything again.

I will look for more and update them later.