simple strategy to win this is mass-ing machine gun at the entrance, and activate "next wave" , make sure you have at least 3 points in money making skill, and the rest is reload/engineer.
and here is another one, when there are 2 ships with the purple orb, the first ship provide divine shield to the second ship, and the second ship provide divine shield to the first ship. so its impossible to kill any of them. they keep throwing their big grenades.
found another bug, the elephant that has the purple orb behind it was giving shield to the bigger boss. when the elephant is killed, the shield is still there. it does not go away.
found a bug, when i restart level, my buildings such as the damage buff and disc launcher are located at the top left corner of my screen. what should i do ?
hmm the enemy needs some rebalancing, the armor makes all shots 0 damage. it seems that the armor gives them invulnerability - not realistic, make the armor wear off so you could shoot the balloons hidding inside.
There is a bug with the game, after the purchase screen where we pause the game, and i click bring it on, i am not able to shoot. I can't select any towers.
 "Days 2 Die"){kind=icon}
 "Ragdoll Invaders"){kind=icon}
 "StarShine"){kind=icon}
 "Frontline Defense Beta 2"){kind=icon}
 "StormWinds: The Lost Campaigns"){kind=icon}