Hearthpwn

This is a super aggro deck, focused on weapons and some chance on bombing the opponent

Surprisingly despite its simplicity it's performing very well in wild, if you know how to pilote it.

First of all, keep in mind that your defense is your attack, if you attack consistently your opponent will be forced to defend himself and lose his focus

Always give priority to your weapon, equip it ASAP and keep upgrading it, and try never to miss a turn without attacking 

The second priority is to build some defense like Guard the City or midgame card like Clockwork Goblin or Steeldancer. You don't need a lot of defense or control as long as you keep being offensive, and the opponent will be obliged to trade 

And lastly, you'll have some pretty finishing cards like Kor'kron Elite, Leeroy Jenkins, Charge and Blastmaster Boom

In the meanwhile, you'll be filling his deck with bombs, that will explode eventually and aid you substantially 

Mulligan:
You'll always want to begin with something that grants you a weapon: Corsair Cache, Weapons Expert, Obsidiansmith or obviously some weapon
Always keep Bloodsail Deckhand and always play it
For the rest, keep midgame cards and discard finishing cards