Save Empire Earth

1 million HP, with self-exploding nukes during day, and tons of high-HP cavalry at night, very fast reloading time firing his laser gun like a machine gun. It's simply impossible to beat him. Maybe it's the version problem, killing the boss used to be a piece of cake but now it's like god mode. With 1 million HP even if you have 10 zeus with 1000 attack each you need to hit him like 100 times which is impossible given all the defenses he has. Any ideas how to beat him?

It's been a while since I played HTL, but I used to buy tons of rock throwers or slinger (the one that costs 1 gold each). While the boss will be firing at them, you're real defence like Zeus and CU will take it down.