Please rate my Six Samurai deck.

looks to me its a well built but if u want to do this maybe u should put alteast 1 great shogun shien it there

ow man extra deck is just 0/10

but if i rate full deck 4.5/10

-1 Veiler (Run 2 or none at all, in this case you need to make room for other cards)

-1 Grandmaster (It's OK, but 2 is overdoing it)

-2 Fiendish Chain (Good card, but there are better replacements in this case)

-1 Mirror Force (Slow, not good in the current format)

+1 Dark Hole (I can't believe you don't run it)

+1 Mind Control (Again, its a staple)

+1 Double Edged Sword Technique (It's awesome)

+2 Musakani Magatama (I've never known a Six Sam player not to run it)

You'll need to fix up that crazy Extra Deck.

How about Extra Blue-Eyes? You have any idea?

ever thought about running Blade Armor Ninja in the extra deck.

oh yes thanks for that idea Pabel.

For the Extra, get rid of Xyz Shien completely, he's just not good. Run 1 Blade Armor Ninja, 1 Heroic Campion Excalibur, and 3 other Xyz monsters of your choice.
Fr the Synchros, take out Naturia Landoise, his attack is too low and the cost for his effect just make him a waste of space. Also take out Colossal Fighter, his effect isn't that good, you'd need to have a huge amount of monsters in your graveyard for his effect to make a difference. Also take out Tiras, the Rank 5. You'll probably never ever bring him out in a Six Sam deck, so it's also just a waste of space.
Hope I helped :D

Thanks Blue-Eyes that helps me a lot. When i read your suggestion and tried to remake extra. I felt like i'm the dumbest person on the world. -thumb up-

you should also run
Abyss Dweller (cuz now that nig is a staple)
Photon Papilloperative (same reason)
Maestroke
Roach
Utopia (maybe)

there's probable more but i dont feel like naming them all