How to Play:
Click Selling and make sure the sliders are set to 0%. (Change this later based on how fast or slow the game is going as you'll need money for upgrades later)
Let your Mecha get resources (The Meteorite and Resources (Yellow Tin))
Buy Upgrades with it in the Mecha Buy and City Buy.
Over time you will buy more and more items from the 'Buy' shops to increase the DMG of the Mecha which will allow you to collect more Resources.
Set Selling % to whatever value you prefer and start earning Money for Mech and City Upgrades (Mech/City Upd.) Best to start with the Mecha's Feet and the City's Dirt Road.
Increase your Mech and City Upgrades to increase your Mech and City by 1% per upgrade. So, 100 damage with 0%, 101 damage with 1%, etc)
Tidied up formatting of willzy12h's comment.
Derp, should be fixed now :)