Just figured out how to defeat Shieldspire. Wait in front of him. Then if he tries to attack, he will open his shield so attack quickly! After defeating him you get a red key.
In the Gundernourd dungeon. There is The Shield Spire, I can't defeat it. Even if the character go back the entrance is locked. It says you must wait your opening against the Shield Spire. But I already wait for a long time. So how I can defeat it.
The lesson I got from 'undefined' games is nothing in this world is perfect. For example, other protector game's achievements has effect if you get it. Hordes of Hordes is a little bit much easy and quick gameplay, but achievements in Hordes of Hordes doesn't give effects. Overall, 5/5 for your games, undefined!
I am a male, I like school and kinda awkward when speaking in public, and always choose heads in every 'flip the coin' game. Looks like 'Hide n Seek" ending is my life...
If you don't get any achievements, go to main menu, then play the game again. This will force the game to load your data. Please + to keep this comment alive.
Sometimes I just mix some gems and make them change colors, even it's not armor tearing (purple), 2 slow (blue) and bloodhound (red) duals make a purple gem.
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 "Dark Cut 2"){kind=icon}
 "Effing Worms 2"){kind=icon}
 "a Grain of Truth"){kind=icon}
 "My Pet Protector 3"){kind=icon}
 "Relive Your Life"){kind=icon}
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 "Paladog"){kind=icon}
 "Medieval Rampage 2"){kind=icon}
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Start from the left. There si also a walkthrough You can find here: http://jayisgames.com/archives/2012/05/the_trader_of_stories_a_grain_of_truth.php