Rate/fix my yu-gi-oh deck?

To be honest, I haven't seen a Beatdown deck work unless it also had another theme (like Dragons or Dinosaurs or DARK). This seems a little too spread out to work. As for how well you'll do in the tournament. It all depends on how good the other decks are, how many people are in the tournament, and if the people really know how to use their decks. You have way too many traps, Jinzo will crush you (not to mention Crush Card). I'll rate your deck 7/10. I suggest using Goblin Elite Attack Force or Goblin Attack Force over Giant Orc. You also need to lose some of the cards that go to Defense Position after attacking. You also have very few Spells. Traps make your deck slow and reactive, while Beatdown decks need to be proactive. Also get Smashing Ground. Instead of Crystal Beast Topaz Tiger, get Gene-Warped Warwolf. Gene-Warped Warwolf is a Normal monster with 2000 ATK ALL the time. Anyway, just experiment with other cards and find what works.