Nothing is more fun than building up a pile of dead bodies. Great game, but I don't really like that Achilles has to jump to make a killing blow, and he should always face the direction of the enemy... 5/5 other than that.
If there's a Crunchball 4000, then I'd love to have a more complex managerial system - buying players, advertising campaigns, bribing other teams down the championship. Great work nevertheless! 5/5
There's a bug. My peeps are complaining about no restaurant, pool, bowling lane etc, but there clearly is one, with waiters and elevators. Other than that, 5/5.
It's a good game, but I think you should also focus on some other conflicts around the world. I don't remember the first World War in any Endless War game, or the Soviet-Afghan conflict (both of which were very large in scale). But 5/5 for the great series!
If you're stuck, then get the latest two treasure upgrades. This means you have the max money. But don't upgrade the cannons until you're at the second boss! Otherwise you're gonna kill everyone too quickly and you won't get as many treasure chests.