I have a Dark Silver Shield +5 and I don't have the Shade Master trophy. Is this normal? 
 
I'm pretty sure I got the shield form Garl Vinland so maybe it didn't unlock because it's unique. Anyone have this problem? 
 
BTW, if you have a +5 Dragonstone, Faintstone, Darkmoonstone, Marrowstone, Mercurystone, Greystone, and apparently Cloudstone weapon, I have a +5 Bladestone weapon if you need the achievement. I really am getting pissed off at how you need to get Black and White world tendency to get these items. I just need those ones and I will have all the weapon achievements. 
 
Edit: Along with my Sharp Kilij +5, I now have a Moon Shotel +5 so if anyone wants to temporarily trade for achievements I will be willing to let you hold them until you get the trophy.

You don't need specific world tendencies for any of those things, black WT just increases the drop rate of rare items and some tendency events give you rare drops.  Every stone can drop off something though...  Anyway you get no achievements for upgrading the dark silver shield, in fact there is no achievement for upgrading any "unique" item.  To get the shade masters trophy you have to upgrade a shield using cloudstone.  The Dark Heater Shield +1 you find in 2-2 will work as a starting point for this, saves you some other mats anyway.