Trophy Hunter Achievement
You get this achievement when you receive 10 Fun Trophies.
Over time, you may eventually collect 10 fun trophies, but not many people on the site use this feature. The easier way is to have a friend send you 10 trophies.
To do this, have your friend follow the steps in my blog on Giving Trophies
You can see what trophies you have already received in Home Menu -> Awards -> Cheers