On the first impression it seems that in the Da Vinci's Gold are crazy when they offered this bonus. But I think that here the casino did not took any risk and got protected by that you can’t get to 100000 in any way. First of all, you have limited time to play. You have only two hours to get to 100 000 euros.
I didn't take this bonus but about two years ago this casino has offered me a similar bonus. To me that was like a chance that I can’t miss and naively I made deposit and took the bonus. Immediately I went to the gameplay not wanting to waste time. And there was the first unpleasant surprise. The maximum bet for most games was limited more than when you play without this bonus. In other words, there were almost no chances, that within 120 minutes you get to 100000. I believe that the casino has chosen a similar tactic with this bonus and you have practically no chance to complete the requirements for this bonus. Even if a miracle happened and if you won 100,000 euros, I doubt that they would be paid out. Here at AG I found the complaint where one player claims to have fulfilled all the requirements and he was not paid. Of course the complaint has status as unresolved.
Keep away from this bonus, really you do not have a chance here.