Easy and cost-effective way for German/Austrian/Dutch citizens to obtain HHonors Gold: apply for the HHonors VISA creditcard. www.hhonorscard.de. Costs 48 euro/year. Welcome bonus 10.000 points. Earn 2 points per euro spent (or 3 points when using in the Hilton hotel portfolio).

I found out that it's possible to have this creditcard in Holland. Went through the whole process as a Netherlands citizen with success (received the card & bonus) and know how to do this efficient. Feel free to e-mail or PM when interested, because of course open to share this.