Right, so here we go!
Just remember, your version of the story may vary from mine due to the decisions you make, however it shouldn't make following the walkthrough much different.
Whilst I have done my best to avoid placing any spoilers in here it's hard to write a walkthrough without them, so expect minor spoilers but you shouldn't expect to see any major ones that will ruin this great story for you.
You'll start off straight away with your first Quick-Time Event (QTE). Just move in the desired direction to complete these ones. After a mini-cut scene you'll will have your first interaction. These white circles will appear on anything that can be interacted with, just like other TellTale titles. Once inside the door you will have your first cut scene with QTE's that will require you to press the correct button or combination of buttons, otherwise you die. There are lots of these throughout but they really aren't difficult and you shouldn't have many problems.
After this you will have to make your first decision and you meet your first compatriot. The opening sequence will roll and....
You'll get into your first conversation; during these you can select your responses. These may impact the way the game plays out for you or what other characters think of you. Remember, silence is a valid option.
Play up to where you get to control the radio, turn the left nob fully to the right, then turn the right nob to the left until you hear the voice. Once you take control on the boat deck use your flash-light over the starboard side of the ship to find out what you hit. After that carry on walking round the ship and help Oak and Siddiq with the sails. Right next to them use your binoculars over the prow of the boat and focus on the ferry in the distance. Go speak to Pete and you will get:
After some conversation on the boat for a while with Pete, you will be ambushed by some walkers and a QTE sequence will follow. After you've fought them off, you will have to pick your entrance to the ferry and you next achievement will soon follow.
I went the ladder way. If you chose the window, just make your way forward to activate a QTE cutscene and make your way upstairs where you will come across a walker hanging in front of the door you want to enter.
If you went up the ladder go towards the door and open the locker next to it and grab the metal bar, use this to help you get inside. When examining the dead body look at the zip-ties on the wrist and the bullet wound in the forehead.
Keep playing and you will reach the same walker in front of the door. Cut down the walker, open the door and look at the yellow duffel bag on the counter. Once you take control again open the locker next to the window. Attempt to open the door and open the cash register full of money to activate the next cut scene. There will be a QTE sequence during this and once you make your choice whether to chase the girl or leave her, the cut scene will end. After this you will get:
You will find yourself on another boat, not by choice this time. There will be some conversation with Randall who just captured you. You are on the way back to their camp, once you finish talking you will arrive and get locked up.
When chained up, examine the 4 things you can see in front of you then after that look at the toys to the left of the cage. Then look to the right..... After the hallucinations, you and Sam will talk about ambushing anyone who comes to get you. After making your decision Randall will come and get you and you will be taken up to his sister Norma. After a lot of talking about yourself and your crew Pete will be bought up and you will be taken away to a new location.
Complete Chapter 6 of Episode 1
Zachary is then forced to attempt to interrogate you by Randall, this can obviously only end well. When you get control look to the right to cut your zip-ties then left to pick up the shirt. Then turn your attention to Greg on the floor. Carry on playing, make your big decision of the chapter. Once Zachary bursts back into the room the episode will come to an end.
Now on to Episode 2!!!