10% profit on win is probably the strategy he used. ~
Did you mean 1.10× payout? Running auto bet on that odds can be considered as a wagering strategy if you don't enable the bet amount and odds changing system after a win or lose. Anyway, he has used a different strategy and
described it above. Which isn't a wagering strategy actually.
Oh, I see. I though he was betting 0.02
BTC at once to reach the 0.05
BTC wagering requirement faster... Unfortunatelly he managed to do the hardest thing, that was to grow 0.002
BTC into 0.024
BTC, but failed wagering 0.05
BTC to fulfill the promotion's requirements. The multilplier game was really treacherous to him and next time he shouldn't think twice before cashing out the money and using it for the purpose he already had in mind, instead of continue risking it through further bets expecting to make bigger profit.