Lost in Random

Missable. 

There are a total of 10 Storybook Pages you need to collect. The first one, while it is technically missable, is in the middle of the main path you need to take to progress the story, so it's really hard to miss. The other 9 will all be off the beaten path. All of these will be associated with a puzzle achievement except for the Onecroft page 2, the one in Fivetropolis, and all three in Sixtopia. You must get all in one go for the achievement to unlock. If you miss any, you'll need to start a new game to get them. Their locations are as follows: 

Storybook Page 1: Onecroft: While all of the pages are technically missable, this first one is incredibly hard to miss. When you reach the Harbor, you'll talk with Snake Eye and then have to progress through an area with some red security lights. You can try to run through the lower section, but just by Snake Eye is a ladder that will take you up on a higher path where you'll have to make your way through a beam puzzle (solving it will get you Dockworker (30G)). After the first few beams, you'll come to a small platform with the Storybook Page right in the middle. Again, it's really hard to miss. 

Storybook Page 2: Onecroft: Shortly after the previous Storybook Page, you'll cross a few more beams before eventually coming to a ledge you can jump down. Before jumping down, look ahead of you and you should see a green target. Shooting this will lower/raise a container on the left so before you proceed, make sure the container is raised. To the right of the green target button is a red security light moving back and forth. Jump down the ledges and sneak past the red security light (do not go under the container yet). On the other side, you'll come to a ladder that you can climb up. Do so and follow the path to the end to reach the Storybook Page. 

Storybook Page 3: Two-Town: After you get the key to unlock the gate in Two-Town (the gate that leads to Two-Way Square and Seller Street), head back to the gate, but turn right just before you reach it (it'll be a path going up hill). Make your way up the path and at the top will be two buttons. Stand on one and have Dicey stand on the other (instruct him to go to it by holding and pressing  over the button). Shoot the glowing green target that appears and half of a bridge will extend. Now switch places with Dicey and a second target will appear. Shoot it to extend the second half of the bridge (Bridger (30G) will unlock here). Cross over and collect the Storybook Page. 

Storybook Page 4: Two-Town: Upside Downtown: After speaking with Royam for the first time, he'll instruct you to go and find some "inspiration". Take the rightmost path in the area with Rayom. When it splits 3 way, take the rightmost path again. When it splits two-way, take the left path. You'll go down a little and come to an area where there will be a quest-related poster that Dicey will stand next to, put yourself opposite of the poster to find a green target. Shoot the target (Upside Downtowner (30G) will unlock here), then head back up the path. When it splits, take the left path and you'll see the Storybook Page just on the right. It will be just next to Bill Welding.

Storybook Page 5: Threedom: As you make your way through Threedom, you'll eventually traverse through the Trenches (they'll open up when the Baroness has won the roll). About midway through these, as you make your way from the Duke's Domain to the Baroness, you'll come to a button on the ground and 5 targets on the wall to shoot. You need to stand on the button and quickly shoot all 5 targets. When done correctly, the gate just to the right of the targets will open (Sharpshooter (30G) will unlock here) and you'll be able to get the Storybook Page. 

Storybook Page 6: Fourburg: This one starts at the Colonel in No Quarter Square. There are 4 green targets that you need to hit as quickly as you can, but they won't be all in the same spot this time. The first one is just to the right of the Colonel, then head under the archway and look immediately right to see one up above you (above the storyteller), then take the first right (next to Mannie) and the 3rd will be just in front of you, then the last one will be just opposite of it. Hit all 4 in the time required (Catapult Slinger (30G) will unlock) and the cage holding the Storybook Page will open. 

Storybook Page 7: Fivetropolis: When you reach Card Maker Road, you'll need to continue to follow the Visionary's voice and then eventually reach a room where a few waves of enemies will spawn (Visionary's Shrine). After they've been defeated, a door on the lower level will open (it'll be sort of a 3-walled ramp). Before you take this, go opposite of this doorway to find a hole in the wall. Follow the narrow path all the way up to get the Page. 

Storybook Page 8: Sixtopia: After you speak with the Janitor at the entrance of Sixtopia, you'll shortly after come to Mannie in a "forest"-like area. Take the path up from him and defeat the enemies. When you take the lower path afterwards, keep an eye out for a pathway on the right. Defeat all the enemies in this area and a new pathway will open. The correct way forward is across the bridge and down a hill, but don't cross the bridge yet. Instead, go up the hill just before it and at the end of the path will be the Storybook Page. 

Storybook Page 9: Sixtopia: When you reach the Royal Gardens, you'll meet Mannie again. Just after him will be a pathway leading up a hill on the left (it's a little hidden). This path will take you across some pipes and eventually lead to where the Storybook Page is. 

Storybook Page 10: Sixtopia: After you rescue Seemore, don't go forward just yet. Instead, go up the hill to the left of where he is/was and cross over the bridge. Go down a small hill to find the Storybook Page next to a gate.