Here's how you can beat the entire game in 2:38, in only 10 easy steps!
1. Build water unit, spend $$ to speed up your men
2. *** DO NOT BUILD ANY TENTS OF ANY KIND ***, this is what triggers the enemy to start building attacking units, and starts the clock!!
3. Build a turret, upgrade it to the max. Place it anywhere, you'll sell it later and won't even use it.
4. Change the speed to 2x on bottom left side.
5. Now watch your men carry water for 1.5 to 2 hours until your XP points build up to 50,000! Note your clock is still at 0:00
Here's why you need about 50,000 points
a) 5,000 to evolve to second stage
b) 8,000 to evolve to second stage
c) 12,000 to evolve to third stage
d) 20,000 to evolve to fourth and last stage "FUTURE" stage.
Add it up and you get 45,000. The extra 5,000 is so you can send some arrow and other attacks after.
6. Ok, now that you have 50,000+ XP points, SELL your turret and sell your water reserve. You should have about $1340, which is the max $ before you exit tutorial mode.
7. CHange the speed back to 1x
8. Now buy your first 2 tents (this starts the clock and alien attacks also start!). Then immediately hit space bar and select the up arrow icon to EVOLVE
9. Keep Evolving until you reach Future stage. Then first thing you buy are the tier 1 money making guys, and speed them up to max.
10. Now use arrow attack to kill enemies until you have $2,000+ to start spending on various attack units. Also keep using arrow attacks to advance your units faster to the mother alien. All you need is 1 air and 1 ground unit with max everything (speed, attack, defence, etc).
If you do this right, you'll be able to beat the game in less than 2:34 on Hard. That's my first try record with this method. I see some people did it in 53 seconds. Probably they are doing something more efficient than the above, not sure. Share your tips :)
Good luck!
PS. I AM GOD INCARNATE!!!!!!!! :)

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