Boss 5 : cerebrospinal Ka - Monster of the Depths ~ Easy Softpedia

This boss has a protective circle around him.
To attack, bombs near the screen to break. Gradually take pieces of your health. Use the same strategy as in the calendar before the bombing.
When enough of the screen has gone so you can target your own boss, shoot, and it will do much harm.
Protect yourself slowly, then pull the boss before that holds again.
The oil that the boss throws at you is the least bottersome attacks boss, so do not worry too much about it.