Can't find tremor gauntlet to defeat tiamat

I've been stuck on trying to get the tremor gauntlet that the video shows to strike the
demon godess which also breaks the crystals which forces me to continue to go through the
game and just power up my character and i've been stuck in the tiamat cathedral area as
i've just had to give up as without the gauntlet i can't defeat the flying tiamat nor
break the cyrstals and that is only one of the several demons.

I hope somebody can tell me where to look or exactly where to find it?

As i've mentioned does anybody know where i can get the tremour gantlet as i can't get
any
further as to defeat the giant queen of even brake the cystals is impossible?

Sorry if I just found out that I was indeed using the wrong version of the game as I had
mistaken it for volume 2 instaed of it being volume 1 as I found it was that yesterday.