NHL 10

**Important: EA will shut down the servers of this game on October 1st 2011, so once that happens, this (and many other) achievements will become unobtainable**

An extremely easy/cheap way to get this achievement (along with the gold & bronze medal achievements):

1. Go to Xbox Live -> EA Sports Hockey League -> Search Clubs
2. Club name: "Twitter" and start the search
Other clubs you can try if its full/unavailable:
Gods Greatest
TGods on Ice
that was h0rrend0us (notice the zeros)
2 chicks one puck
Puck Head

3. Send a join request, press yes, and you'll automatically join (when its not full)
4. Go to 'awards and records'. LT and down to go to Awards.
5. Press B to back out and this should unlock the 3 achievements. If it doesn't unlock immediately: wait a while or go back to the awards and back out again.

That's it. Make sure you LEAVE THE CLUB after you get the achievements so other people can join the team. (This is how to leave the club: go to club members, press A when you've selected your gamertag and go to 'leave club')

Join the open public club. The Dunskies. Go to awards section, hold LT scrole to awards. view silver medal, exit awards = achievement pops up.

You'll get either Gold, Silver, or Bronze medals if you place high enough in either the Professional or Casual divisions in the EASHL.

When I asked the EA Sports Community Manager via twitter when this would start, I got this reply:

"@stevivor End of the month! Seasons last a month. Top 10% Gold, next 10% Silver, and next 10% Bronze."

This means you can get this achievement at the end of September (aka, the end of the first monthly season).