Guild Wars 2

I’m stuck in a room with a big crystal and spikes under it. Anyone know what to do next?

http://dulfy.net/2013/09/08/gw2-major-in-enhancement-sab-achievement-guide/

That is the guide for finding the flute/wooden whistle.
You need to bomb the crack from the ledge above and then play the Shatter song, found in an earlier zone (guide here -http://dulfy.net/2013/09/08/gw2-major-in-enhancement-sab-achievement-guide/
and the other guide here -http://dulfy.net/2013/09/06/gw2-bachelor-of-secrets-world-2-achievement-guide/)
Best of luck!

Actually, you don’t need the shatter song. Using the glove you can push around various different blocks to reach other icicles to break down, which can eventually result in having a path to break down the main icicle. The shatter song is easier, but the puzzle isn’t impossible.

… i do tribunal mode evry day without this song xD bcause if u know the path and tricks its as fast as the normal way…

each icyle has 3 cracked parts
you have to shoot all 3 with bombs or sling shots and it will fall down..
if the bomb doesnt bug for u u can hit multiple spots with 1 throw, or hit the ones that face the other direction . slingshot sometimes too ^^
i marked the spots where to shoot on your screen