Hearthpwn

Mulligan: Zombie, Creeper, earthshock, rockbiter, ferals, flametonuge with early minions

Even matchup. This deck fares much better against the new hybrid hunter than it did vs face hunter. The first reason being they usually only run one unleash the hounds, the second being that they have highmanes. While those beasts are scary for other classes we have 2 hexes and 2 earthshocks allowing us to easily deal with them. You need to lay fast here - usually it's good to coin a creeper out even with no turn 2 or 3 play. Fight for board control, sweep with lightning storm and switch to aggression and race them down.  Playing around traps correctly is important, use flametongue to push totems into a freezing trap, use argus to escape explosive trap and ignore snake trap until you have lightning storm. A final small tip is that you can usually force them to use their final bow charge by putting mana tide or flametongue even onto an empty board. 

Mulligan: zombie, creeper, earthshock, rockbiter, ferals, flametonuge with early minions, sometimes shredder on coin.

Zoo: Even matchup. Earthshock all the things! Fight for board control early and try to use storm at an opportune time and not waste it clearing 4 imps. Save hex for big things and don't pop void callers unless you can deal with a doomguard or mal'ganis. Sometimes they get the dream and there's nothing you can do but sometimes so do you. Pressuring them is key, but don't throw everything down trying for lethal without being able t deal with mal'ganis. 

Handlock: An easy matchup, you have earthshock for drakes, bgh and hex for giants and plenty of burst. If you have no way to finish them off if they drop a taunted molten giant don't get them low until you do. Watch out though - sometimes they run a acidic swamp ooze so be careful with doomhammer. 

I haven't faced enough dragon lock to comment. 

Mulligans: Lightning storm (for patrons), rockbiter, earthshock, early minions

Control: Used to be a free win and still is heavily favoured for the shaman, but the more dragon oriented ones can sometimes be problematic. Usually I play really slow building up a totem wall, dealing with their minions one by one. Don't play doomhammer unless they've already played harrison!  With dragon versions be wary, in the stats above I lost 3 games to control warrior because the one card they got from yesera before a hex enabled a ysera awakens clear into grommash kill. Nefarian is also a pain because nearly all your spells are good! They can get hex, lightning storm or burst spells to finish you off. 

Patrons: To be honest this is a bad matchup, sometimes you just don't draw lightning storm to deal with patrons and a lot of your minions have less than three attack (that searing totem really screws you sometimes). The amount of minions on your board can be a real hassle with pumping up frothing berserkers after whirlwind.Try to kill off your creepers etc. before turn 8. Hexing the frothings is usually correct. The key strategy is denying card draw with earthshock and not letting them have damaged minions on board to use battle rage with. Loatheb is useful for shutting down key turn 6 or 8 plays. 

Mulligans: Early minions, rockbiter, hex

A great matchup for you as unless they get a really fast start you should have board control and deal with their minions one by one. Hexing an innervated minion like a belcher or druid of the claw is usually correct. KIll off shredders with earthshock as there generally isn't a good target bar sylvanas.  Protect yourself from combo with taunts or heals. Generally emp Thaurissan is in their decks instead of harrison so go to town with doom hammer. Keep rockbiter at start for zombie  chow. 

Mulligans:  Rockbiter, Lightningstorm, early minions earthshock. 

Mechs:  Even matchup, keep lightningstorm and remove mechs each turn if possible. The mirror entity secret is not an issue with minions like flametongue/mana tide totem, zombie chow and argus. This is all about board and damage control. Don't get into range of double fireball and you'll usually get board control and win. 

Tempo: Favoured matchup, your totems really screw up flame cannon and again mirror entity is easily played around as with in mech mage. Kill of flamewaker asap and you should win. Don't play into a flamestrike - though most don't run one. 

Freeze: Favoured matchup. Keep earthshock/hex for doomsayers over scientists. You've got doomhammer to do damage even while minions are frozen, you have burst with al'akir and rockbiter. You can deal damage from hand to proc ice block even with a frozen board via fire elemental and crackle and you have two ways of stalling after alexstrasza with loatheb and healbot.

Mulligan: Lightning storm, early minions, rockbiter

Unfavoured matchup but easily winnable, try to trade efficiently, save an earthshock or hex for tirion, watch out for harrison and try to avoid letting them get a good quartermaster play. Don't over extend into an equality play and play around it by killing off small minions when playing large threats. If there is a single recruit on the opposite board for example on turn 8 i would play dr. boom and earthshock the recruit (if you have hex for tirion). 

Mulligan: Rockbiter, earthshock, early minions, hex. 

Hard matchup, keep earthshock/hex for velen's chosen plays. Hexing an injured-blademaster is good. Try not to play into a turn 6 cabal shadow priest and play around board clears. Be careful putting minions into lightbomb but at least totems survive. 

Mulligan: Rockbiter, early minions, flametongue, loatheb. 

Unfavoured matchup - remove minions to avoid easy oil plays, hex violet teachers, don't over extend into a flurry play. You can usually get them to use that last charge of deadly poison on a flametongue/mana tide totem like with hunter's bow. Play loatheb on key turns e.g. after sprint and heal up/ play taunts at the right time to avoid a face hit into flurry play. Be happy if they eviscerate your minions. 

Mulligan: earthshock, early minions, rockbiter, lightningstorm.

Mechs: Favoured matchup. You can usually gain board control with lightningstorm. Save earthshock for after a mech has been buffed with the weapon. Hex/bgh big targets and win.

Midrange: Play to counter yourself, earthshock creepers and flametongue totems, try and get good lightning storm clears. Capitalize on turns where they are overloaded. Doomhammer helps massively in the totem wars. Be aggressive.