Thankfully, they are not too disorientating and all lead to the same place. Leave the Oakside building and you'll find yourself in one of numerous starting locations. Right from the start of this Stage you can grab a trophy. Once inside, find the letter on the desk which gives you Scrapbook 14/50 and instantly ends the stage, welcoming you to the horrors of Slender: The Arrival. Use the path to get to Oakside which isn't too far from the burnt down house. Turn it on and then go into the construction site, grabbing Scrapbook 13/50 from the pallet on the left.
#SLENDERMAN THE ARRIVAL ENDING FORU GENERATOR#
Leave Charlie's house and you'll see another generator outside. Once you're done with Charlie, you need to exit the Stage. Note: When restarting the Prologue you don't need to pick up the collectibles you already obtained you simply need to grab the flashlight and the key and then leave. Consult the video for greater detail on these, as it's easy to get lost. Just outside the back door to the left is Scrapbook 12/50. Now, since you're in the house, check the room in the back right for Scrapbook 10/50 and the ground in the deepest part of the house near the back door for Scrapbook 11/50.
You need to do this 2 more times to unlock: Once you locate him, you need to approach and disturb him (he will not kill you). He will be standing facing a wall but his location within the house is random. You're going to need to look for a scary looking guy called Charlie.
After a few seconds, a burnt down house will appear on your left and this is where the trophy is obtained. Cross the bridge and follow the path round to the right. Switch that on and you'll see a makeshift bridge in front of you. Follow the path around to the right and down a hill where you will see another Generator. You may notice Slender on the hill in front of you but don't be alarmed. Press A to switch it on, continue down past a round wire coil, stopping to pick up Scrapbook 9/50 from on top of it, and follow the path around to the left.
If you wish to get it now, you need to leave the house and take a diagonal path towards a generator. I did it once on this playthrough, once on Hardcore, and the final time just to improve my time for the speed run. So, you can either do that now or wait until a later time. Once outside, there is one more trophy you can pick up on this stage but it requires you to restart the Prologue twice to obtain it. So, now you're done here and you can leave through the gate you previously unlocked.