This deck is called Turn 5 Baku Pally because you will frequently win by turn 5. The deck uses the new card Baku the Mooneater to summon lots of Silver Hand Recruits, and then capitalizes on all those silver hand recruits with a number of buffs and support cards allowing you to quickly turn a board of 1-1s into lethal damage.
Mulligan: Find your 1 drops.
Early Game: Get control of the board through use of your hero power, your divine shield 1 drops, secrets and Muster for Battle/Unidentified Maul. Face damage at this stage is less important than making sure that you can have at least 4 minions on the board that can "stick." If you are on the coin, there is very little reason not to use it in your first 3 turns. The early tempo boost it gives you can be key in a lot of matchups.
Turn 5 onward: This is where you can start to capitalize on your overwhelming minion presence. Use cards like Level Up, Quartermaster and Funglemancer to buff the hell out of your very wide board. If you have a lot of minions on board always count to see if you have lethal. This is the stage of the game where you want to start going face and planning for how you are going to finish the game. If you opponent keeps having answers to your board/you weren't able to get board control in the beginning, then you do not want to be playing your buff cards. Instead hold onto them and continue to try and flood the board. Eventually your opponent should run out of clears or decide it's not worth it to keep clearing your 1-1s and decide to go face. That is when you strike with your buffs.
Late Game: If for some reason you haven't been able to close out the game yet, you still have a lot of value thanks to your upgraded hero power. Continue to try and flood the board and use your buffs wisely to fight for control until you see your opening where you can hit your opponent for lethal. With Vinecleaver equipped, you can threaten quite a bit of face damage while also consistently being able to generate 4 silver hand recruits per turn.