I was having issues with the last boss as well. I focused all my attacks on the boss, not attacking any of the adds, it seemed to work well. I stopped attacking only to grab ghost then right back on boss. Remember to use your roll to get out of the aoe attack he does... just something to try.
I just wanted to share that you can obtain the 2 bonus stars by clicking on the Facebook & Twitter links located in the top menu drop down. I couldn't figure out why i was stuck at 75 stars and missing 2.
Just FYI, if you are having trouble beating the Dutchman, have you checked out the achievements screen to upgrade things like overall damage, accuracy, action points and hull?? can be found by clicking on the star in the lower left when looking at your fleet.
For the num num levels, don't forget about Paladogs aura. I was getting crushed and frustrated until I started launching my waves when enemies were close enough that my troops would be in my aura.
having trouble getting game to load after the first battle, sitting at black screen with side bar buttons but none of those are working. Anyone else having this problem? I have reloaded and tried different classes but nothing is working.
 "Save the Earth! - The Incremental -"){kind=icon}
 "Mighty Knight"){kind=icon}
 "Kingdom Rush Frontiers"){kind=icon}
 "Caribbean Admiral"){kind=icon}
 "Paladog"){kind=icon}
 "Legend of the Void"){kind=icon}
 "Tyrant"){kind=icon}