I killed the boss by using the mirror shield that I found on level 4 at the sub-boss. the giant frog. after you kill it go into its mouth and into its digestive track. keep walking and you should find a mirror shield. when you get out though, it comes back to life. just use your new shield for the whole battle. the flies it shoots ant you will attack the frog. good luck, and good hunting!
I DUN LIEK ID! i was invisible with no symptoms and was playing as a parasite (low visibility) and they saw me. and MADAGASCARS shut their border. i must have been like... -1 visible O.o
TO: PASS LV.5: dont try and capture any of the big bubbles until your opponent has (been an idiot) put them down to 20 or so. then you can just take them with your reserves. try and have a bubble with maxed out near each on. good luck!