I have founded a stupid but quick trick to destroy the tank (robot). Firsty check your heart beat, 60 or less is the best (if you dont have... wait). Secondly you should just walk (or run) to its direction and avoiding all rockets. The third point of this trick is... standing as close as posible to the tank and let it lunch the rocket (
). It works in 100%, if you die = to big heart beat. After that trick you can use some medicines (antiseptic + bandages). If you are thinking that you will die after 10 minutes or have a lot of broken bones don't panic.. you will have only 1 scar.