Won it. I seem to see if you attack the boss you must control 3 of his side islands and he will only attack when full. Wait until he attacks and then fend them off with warriors( Samurais). You can now either kill the boss with organisms you brainwashed along with warriors( Samurais) or if you are like me, kill it with 8 green giants along with samurais + brainwashed organisms.
What do you call this game? Very dumb. If someone knew HTML, Lua, C++, etc. they could make this game in a few seconds. Very simplistic. In the picture of Battle Field: Vietnam and the game, I could see the real game is not like that stupid game. I am sorry but please get a better game. Maybe you could also study more about computer programming and maybe one game will go to the front page. maybe you could get help from Google maybe...
 "The Great War of Prefectures"){kind=icon}
 "TETRIS'D: The Game"){kind=icon}
 "Battle Field: Vietnam"){kind=icon}
 "Stick War"){kind=icon}