even if you have lots of  legendary account you cant still be able to reach that amount in just a signature campaign only because 0.1 per week is too big enough but i guess that is possible in trading, gambling and investing  , only if you have to risk a verry big amount. if you have a special skills in developing or coding and some indemand jobs these days for sure you can always achieve that amount in a single week without spending any amount as a capital. but overall  the real secret to reach that amount is dedication , hardwork and willingliness to take any risk.