Alan Wake Cheats

Energized! (10): You changed batteries 100 times
Thunder and Lightning (20): 50 Taken have felt your fury. Also, your flashbangs
Collateral Carnage (20): Taken have been drowned, electrocuted, or dispatched by some other inderect means
Child of the Elder God (10): You shone a light upon this night of otherworldly fiends
Perchance to Dream (20): Oh, so THAT'S what happened
Medical Opinions (10): Listen to Hartman's Recordings
Drink 'Em Up (10): Put de lime the coconut twice
Gatekeeper (10): Cut the power to the transformer yard
The Lady of the Light (20): Discover the secret she guards
Tornado Wrangler (10): Defeat the tornado
Departure (40): Complete the game on Normal difficulty
Hardboiled Water (40): Complete the game on Hard difficulty
Alan, Wake Up (50): Compelte the game on Nightmare difficulty
If it Flies, It Burns (20): Burn 1,000 Birds
Taken Season (20): Defeat 50 Taken with the hunting rifle
It's Not Just a Typewriter Brand (20): QWERTY? DVORAK? 50 Taken know it's neither
Come On, Come All (10): Kill four Taken with a single shot from the flaregun
Sound and Fury (10): Kill four Taken with a single flashbang
Two for the Price of One (10): Kill two Taken with a single shotgun blast
Carny (10): Knock over five can pyramids
Meet the Deadline (30): In "Mirror's Peak", make it from the Coalm Mine Museum to Cauldron Lake in 40 minutes
An Idyllic Small Town (30): Make it through the "Night Life in Bright Falls" in one go without dying or restarting even once
Gunless Wonder (30): Make it to Cauldren Lake without firing a single shot in, "On the Road to Cauldron Lake"
Every Nook and Cranny (30): Discover all of the hidden chest
Picking Up After Yourself (30): Find all of the manuscript pages in Normal mode
Collector's Edition (50): Find all the manuscript pages in the game, including the ones in Nightmare mode
Hypercaffeinated (30): Discover all coffee thermoses
KBF-FM (30): Listen to all of the radio shows
Couch Potato (30): Watch every single TV show
Bright Falls Aficionado (30): Absorb every bit of local history and culture
What Light Through Yonder Window : Defeat 50 Taken with the flaregun, the way Shakespeare intended

The Signal DLC Achievements
A Friend in Need (25): Special 1: Find someone to help you.
A Friend Indeed (50): Special 1: Follow the signal to its conclusion.
Cardboard Companions (25): Special 1: Discover all of the cardboard standees.
Fast and Furious (25): Special 1: Make it through the final battle in less than 1 minute and 30 seconds.
License Revoked (20): Special 1: Complete the episode without using a single vehicle.
Run-On Sentence (50): Special 1: Complete the episode without reloading the game or restarting a checkpoint.
Tick Tock (30): Special 1: Discover 10 hidden alarm clocks.
Words Will Never Harm You (25): Special 1: Trigger all of the furnaces in the basement.

The Writer DLC Achievements
Creative Space (25): Special 2: Discover the secret area.
Ding! (5): Special 2: Complete the elevator ride.
Go Gentle Into That Good Light (25): Special 2: Make it through the approach to the lighthouse without firing a weapon.
Heartbreaker (20): Special 2: Have some poison poured in your ear.
Iron Will (25): Special 2: Survive the final encounter without being seriously hurt.
Kill Your Darlings (50): Special 2: Defeat the final obstacle between you and your goal.
Licensed Properties (30): Special 2: Discover 10 Night Springs video games.
No Punctuation (50): Special 2: Complete the episode without reloading the game or restarting a checkpoint.
Whirlwind (20): Special 2: Make your way past the tornado in under 60 seconds.

Avatar Awards
Complete the indicated task to unlock each item.

Jacket and Scarf(female): Play the Limited Collector's Edition Bonus Disc.
Jacket and Scarf(male): Play the Limited Collector's Edition Bonus Disc.

Nightmare Mode
Nightmare Mode: Successfully complete the game

The Writer Hidden Area
There is a hidden area that unlocks an achievement (Creative Space) and adds a little bit of information to the storyline. It's location is in the same area as the airplane you come across and jump on it's wings to get to the lower level. After dropping from the plane, head to the left of the furthest wing (towards the front of the plane). Along the rock wall you come to, there will be a slightly hidden hole. Traverse through and follow the path along the cliffside to come to a cave with a giant typewriter. Alan will say a bit of dialog, and if you go atop the typewriter, you can read the paper which gives more insight into the storyline.