Each card explained:
-Junk Synchron: The staple of this deck. Every card in the deck is built around this guy. Your goal is to get him out on the playing field ASAP with supporting monsters to bring out any of the Synchros you see fit.
-Quickdraw Synchron: The second staple of the deck. Quickdraw is what will allow you to pull out the Warrior cards that aren't Junk Warrior. It's effect also makes it easier to activate Junk Synchron's effect when you normal summon it, as you'll be discarding a card to special summon Quickdraw.(You generally never tribute for it)
-Level Eater: This guy is perfect for increasing Junk Warrior's attack when you summon it, and it also works wonders paired with Quickdraw to open up more Synchro choices, even allowing you to summon Junk Warrior with Quickdraw.
-Synchron Explorer: Basically has the reverse effect of Junk Synchron. Whenever you normal summon it, you can pull Junk or Quickdraw from your graveyard for easier Synchro summons.
-Salvage Warrior: This is the only monster you'll be tribute summoning, and for good reason too. Whenever you can get him out, you should be doing so, as he'll enable some of the higher level synchro summons with Junk Synchron such as Stardust Dragon or Junk Destroyer.
-Mystic Tomato: Mystic Tomato is only here so you can pull out Junk Synchron with more ease.
-Junk Servant: Pairs excellently with Junk Synchron, as whenever you have Junk Synchron out on the field, you get to freely summon him and you can then Synchro summon any level 7 Synchro immediately.
-Junk Blader: This guy is here simply to help out with pulling Junk Servant out, aiding in Synchro summoning, and can serve as a great starter monster due to it's 1800 attack.
-Quillbolt Hedgehog: Almost a necessity to use in a Synchron deck due to it's effect, and pairs the best with Junk Synchron in particular. He helps pull out Junk Warrior in a snap.
-Mystical Space Typhoon: This deck lacks punishing spells/traps and gets rolled by stall decks that run Swords of Revealing Light, so this card will help relieve some of that pressure, and plus, it's always a good card to have in any deck.
-Raigeki: You can replace this with Dark Hole if you want, but this is to pull the playing field in your favor if your opponent manages to get the upper hand.
-Reinforcement of the Army: This card should almost solely be used to bring out Junk Synchron, but there's no harm in pulling out Blader or Servant.
-Swords of Revealing Light: Simply here for some extra protection, that never hurts to have.
-The Warrior Returning Alive: Allows you to continually reuse Junk Synchron for multiple Synchro summons.
-Tuning: The most important Spell you have, you'll be able to freely bring in Quickdraw or Junk thanks to it, and when bringing out Junk, you have the potential to get a card like Quillbolt or Explorer sent to your graveyard from the top of your deck for even easier Synchro summoning.
-Battleguard Howling: Similar to Swords, this is another protection card, and this one actually bites your opponent back. Helps keep your Warriors alive as well.
-Call of the Haunted: Pretty self-explanatory, allows you to reuse Synchros in the Graveyard or your Synchrons if needed.
-Mirror Force: Another protection card, and one you'll want to save for when your opponent REALLY gets the upper hand.
-Pinpoint Guard: This trap allows you to reuse Junk Synchron even more, and safeguards it during your opponent's battle phase.
-Scrap-Iron Scarecrow: More protection, and a reusable one at that. If your opponent doesn't have much to deal with Spells or Traps, this will be a HUGE headache for them.
-Spirit Force: Ask for more protection? Here you go! Not only that, but this card will also help bring Junk Synchron back from the grave.
-Chevalier de Fleur: Your one monster that grants you the ability to negate spell/trap activation, this card and Road Warrior will specifically require Level Eater to use it's effect on Quickdraw, so it's a little difficult to bring out, but not impossible, and very strong when brought out.
-Colossal Fighter: This is an AMAZING Synchro for this deck, as it will allow to bring out destroyed Warriors if it gets destroyed itself, and it also gains extra attack based on the amount of Warrior-type monsters are in your graveyard.(there will be quite a bit)
-Drill Warrior: This guy here, just like Chevalier and Road, will specifically need Quickdraw + Level Eater, but for a different reason, obviously. This card is great for bringing back your Synchrons from the grave due to it's effect.
-Junk Berserker: This card is extremely powerful and can punish your opponent for playing a bit too aggressively. In this deck you can lower a monster's attack by 1300, 1500, 1800, 2300, 2600, and 2700 due to it's effect. Then to make it even scarier, it also punishes defensive play since it instantly destroys defense position monsters you attack with it.
-Junk Destroyer: You'll generally want to bring him out with multiple non-tuners to take full advantage of his effect. Destroying high attack monsters and pesky traps/spells is the goal with him.
-Junk Gardna: This card can be swapped with whatever you deem fit, but I have it here as a simple defensive pick. Making sure you don't get field wiped by a Mirror Force if you see it coming for example.
-Junk Warrior: Probably the most common thing you'll be summoning with Junk Synchron. It's not the most powerful trick up this deck's sleeve, but when executed correctly, you can have him with over 3000 attack.
-Nitro Warrior: This card is very fun when you get it out early and use it in conjunction with your spells, as it will gain 1000 attack and be able to attack twice if your opponent has a second monster in face-up defense position. So it's somewhat situational, but it has a high attack stat and isn't a bad card to bring out at all.
-Road Warrior: If you can bring this guy out quickly, do it! You can even add an extra of him and bring in Road Synchron if you want, as you can continually pull out monsters for Junk/Quickdraw to Synchro summon with.
-Stardust Dragon: This card is more or less your insurance card. You should generally always bring it out if you're expecting cards like Dark Hole, Raigeki, Mirror Force, etc... to come into play.
-Turbo Warrior: Probably the most situational Synchro in the deck, but if you're expecting to go up against other Synchro cards, you'll be glad you brought him