clwinters

Here is a jpg of the area I'm in

Got to be a secret to smashing this blue crystal. I've been swinging at it for an hour with no results. Can anybody helpme?

If you use the letter "R" it gives you the direction and has an arrow pointing at the cluster that I've been beating on for an hour. I can't budge the thing.

I beat on it for 15 minutes and it didn't budge.

How do you get the prototype rifle? I have gotten the blue crystals destroyed except for the one where the rifle is supposed to be. How do you destroy the last crystal? Got the cannon to destroy all the others but it doesn't touch this last one. What's the secret?