Leon, thanks for drawing my attention toward Dual Links! Been having fun! The Samurai deck is pretty OP. I feel lame for not being smart enough to build my own though.
You're welcome! ^^
Just keep an eye out for combos other people use to beat you and go from there; it's what I did. :D
I'm using a water deck at the moment. Mako as my character for the auto-"Umi" at the start of battle, with "Levia Dragon Daedalus" and "Suijin" as my main hitters. 3 "Unshaven Angler" (counts at 2 monsters for tribute summoning a water monster) for getting them out easy the normal way, and 2 "Big Wave, Small Wave" spells (destroys all monsters on my field, and then I can special summon the same amount of water-type monsters from my hand) for that potential turn-1 Daedalus/Suijin.
The rest is just filler monsters and spells/traps that are useful on any deck, like "Enemy Controller" (quick-play spell that allows you to either change the position of an opponent's face-up monster, or allows you to tribute one of your monsters to take control of one of your opponents face-up monsters until the end of the turn), and "Wall of Disruption" (trap card that activates when your opponent declares an attack and reduces the attack of all their face-up monsters by 800x the number of monsters on their field).
Got the idea from someone that beat me with a similar setup but using a Blue-Eyes White Dragon deck.