To easily beat the Sparta level
Fully Upgraded Grenade Launcher.
A lot of repairmen.
A quake box.
Every time the quake box fires they all fall, and the repair men repairs the base.
for those not-so-bright go into the profile of the user who posted their song, and copy + paste it via their comments at the bottom of their profile
PLEASE KEEP THIS AT THE TOP OF THE PAGE
The trick is to cross your eyes until you can clearly see another picture between the other two.
Whatever looks wierd or standing out should be the difference.
It works because the picture you see in the middle is a mix of the other two.