Amnesia: Memories/Walkthrough

Choosing a world
Amnesia begins with a discussion with Orion. He will fill you in on your current predicament, after which you can enter a name for the heroine and choose a world. The world determines which love interest you will be pursuing, each named after a suit of cards:
 *  Shin : The representative of Heart World. He is the main hero, and should be the first route played.
 *  Ikki : The representative of Spade World. He is a friend of Kent's, and seems to be a playboy.
 *  Kent : The representative of Clover World. He is a friend of Ikki's, and is as logical as he is socially-awkward.
 *  Toma : The representative of Diamond World. He is a childhood friend of Shin's, and is a big brother type.
 *  Ukyo : The representative of Joker World. His route is the secret route, and thus must be unlocked by completing all others. While Shin's route can be considered the main route, Ukyo's is the true route, answering some questions that may have gone unanswered in other routes.

Progression
After choosing a world, the game begins, and you must gather information through conversations and events described in text. The heroine will also occasionally receive messages on her cellphone, though the contacts found on her phone vary in each route. When receiving a message, the phone opens automatically, and you can scroll through to read the entirety of it. Orion will usually comment on it afterward, either directly suggesting how you should respond or giving you a choice. When skipping through text on subsequent playthroughs, the phone will effectively pause your skip, allowing you to continue only after you have closed the message.

The choices you make in the chosen world will then lead to one of three types of endings:
 * Good: The happiest possible ending. There is only one of these in every route. For convenience, the walkthrough for each world will begin with the good end.
 * Normal: An ending that is neither good nor bad. Like the good end, there is only one of these in every route. It tends to be open-ended.
 * Bad: The worst possible ending. Each route has at least a couple of these, usually as the consequence of some bad choices but sometimes after a great loss of trust.

Parameters
You can achieve different endings as your choices directly affect three parameters: affection, trust, and suspicion. Affection and trust determine where the heroine's relationship with the love interest will end up; if they aren't particularly high, they can lead to a normal end, and if they are low, a bad end. Affection in particular indicates the heroine's love for the love interest in her amnesiac state, while trust is how the love interest feels about the heroine. If playing blindly, try to make choices that have the love interest open up to the heroine, increasing their trust for each other and increasing her affection for him. Ultimately, it is high affection that leads to a good ending.

Inversely, there is suspicion, which should be kept low (with some exceptions outside of your control). A high amount of suspicion can lead to a bad ending, as the love interest will realize that the heroine has been lying to him and thus doesn't trust him; in most cases, this can be avoided by revealing the truth to him at the right time, but early on, you should try to keep your questions vague so as to avoid tipping him off. In Toma's route, there is also doubt, an additional negative parameter. While suspicion refers to the love interest, doubt refers to the heroine's feelings toward Toma; as she becomes more suspicious of Toma's behavior, she loses trust in him, potentially leading to a bad end.