Since I did it for the expansion I feel like I'm obligated to do it for the mini set as well. At least this one won't take long. Also i'm skipping seperating this into class sections because that just seems redundant.

Tormented Hearts: I haven't attempted this one yet but it sounds like a complete pain in the ass. Since Taintheart Tormenter's effect is so powerful that it can completely lock out spell based decks, they will most likely concede the moment he hits the field, whereas non-spell based decks will most likely just remove it through minions. At best you will get one, maybe two, spellcasts out of your opponent which means it'll take quite a lot of games until this completes. Going into Wild at Bronze rank might help because people play like absolute lunatics and might just bend over backwards to spend extra mana to remove the lad.

Puppy Power: While we have plenty of discounting options in Standard I feel like using Emperor Thaurissan and the multitude of smaller Druid Beasts in Wild will speed up the process considerably. If you have Aviana and Kun (or Omu) you can set up your own achievement OTK using bouncers to play expensive beasts multiple times for 1-mana (If you kept Tyrantus for sentimental purposes you might be winning big here). JUst make sure you actually use Druid beasts and not neutrals.

Poison, Poisoff: Just put Venomous Scorpid into all your decks until it's done. Not worth building a deck around.

Don't Move a Muscle!: Alright, this is probably the most frustrating and bizarre experience. I attempted to build a pure Frost deck to guarantee Frostweave Dungeoneer and managed to create a deck that is literally unable to win, regardless of how well it does at any point. Either way, make sure to get as many elementals out as possible and freeze both face and minions as much as you can. Destroying a minion with a frosty elemental also counts, so don't be shy to value trade. Deep Freeze is unsurprisingly good here.

Friends Like Me: Alright, fuck this one entirely. Getting 3 of the same is quite simple (as a matter of fact I got it the first time I played the spell). Getting 4 is nigh impossible. Someone did the maths and apparently it is below 1% (as opposed to around 12% for 3). Either way, if you really want this achievement you play a Paladin deck with decent draw (Wild is best) as well as Mutanus and Venomous Scorpid (and every other card you need for a different achievement) and try to make the most of the time you will spend. For reference, I got 18 ranked wins today in Wild with a Paladin deck that doesn't even run any win condition....I still never hit 4. If you aren't a completionist I implore you to just forget about this one, it's actually worse than both the Oh My Yogg! one and the Horde Operative.

Even Steven: As easy as it gets. Mad Summoner being a bro again. If you discount both Against All Odds and Wave of Apathy (in case they have a board already) with Palm Reading and you can tutor Summoner with Insight. You don't even need any Wild cards (outside of Summoner ofc) because Priest now has decent draw in Standard.

Hiding in Plain Sight: Run cheap minions and Preparation so you can get both of your Shrouds fast and then concede to move onto the next game. Running spell discovery is unnecessary since you should be able to get 4 procs every game which means you'll only need about 7 to complete this. If you want to go hard you can also just run Swindle and Shroud of Concealment as your only spells to streamline the process.

Spit Hot Fire: Shaman has draw now but it wants you to run Nature spells only so into Wild we go (if you still have draw cards there). If you prefer to stay in Standard, Wandmaker is a really strong option because there are only six 1-mana spells in the pool. Running spell damage and chip damage like Pen Flinger is also important to set up the board. Don't be too greedy because Shaman only has shit healing which means you won't survive until the board is full. Alternatively you can also just run Perpetual Flame in a real deck (Spell Damage Burn Shaman being the best idea probably) and just hope to get it done that way.

Ugh, It's MY Life, Mom: Get this one done fast because it might just get nerfed quit soon because of Wild shenanigans and who knows how hard it will be to complete then. Overall it's probably the easiest to just run a control deck with big cards and stuff like Backfire or The Soularium. It turns out that playing the cards while Immune does  actually advance the achievement so by all means, abuse the fuck out of it in Wild.

Kresh Got Back: Now this one might seem easy but there are a lot of complicated nuances. First of all, Kresh, Lord of Turtling is a 6-cost legendary card, which means you need at least 6-mana to play it and you can only run one copy in your deck. Second of all the weapon comes from his Deathrattle which requires your minion to die before it activates. Afterwards you will have to attack with your weapon 5 times, out of which each attack will count towards the achievement. Yes I just wrote this entire shitpost as a way of telling you that there was no point to explaining anything. Fucking sue me.

Hungry Hungry Murlocs: This one is just a bit of a grind. It's a lot harder to actually find a minion above 4/4 to eat. That being said, this is probably the most fun achievement because playing Mutanus is just really hilarious. I recommend just throwing Mutanus into all of your other achievement decks and iit will eventually complete itself. If you want to rush it, go Rogue with Shadowsteps (inefficient) or play it with Baleful Banker and Zola the Gorgon in Wild.

Adventure is Out There: LIterally completes itself while you attempt to get Friends like Me

That's it, that's all I've got. As per usual, if you figure out any exploits that can speed up the process let everyone know.