Successfully complete the game. You can now start a second playthrough with your previously upgraded weapons and clothes.Bonus dresses
Successfully complete the indicated chapter to unlock the corresponding dress:
- Classic: Infernal Train (Chapter 6). When equipped, you will regain health when shrunk.
- Misstitched: The Dollhouse (Chapter 5). When equipped, your Shrink Sense duration is doubled.
- Royal Suit: Queensland (Chapter 4). When equipped, your health is limited to four roses total.
- Silk Maiden: Oriental Grove (Chapter 3). When equipped, your enemies drop twice as many teeth.
- Siren: Deluded Depths (Chapter 2). When equipped, your enemies drop twice as many roses.
- Steamdress: Hatter's Domain (Chapter 1). When equipped, breakables drop more teeth and roses.
Search the indicated locations to find all collectibles, including Memories, Pig Snouts, Bottles, and Peaches:
Chapter 1: Hatter's Domain
Chapter 2: Deluded Depths
Chapter 3: Oriental Grove
Chapter 4: Queensland
Chapter 5: The Dollhouse
Scroll Of Destiny mini-game
In Chapter 4, just after you do the first chess puzzle, you will get chased into a hole by the giant unbeatable card monster. When you first get down there, go a short distance ahead, and look at the right wall to find a heart stone. Shrink down to learn that it is a fake rock. Run into the keyhole tunnel. On the other side is a floor where you can use a bomb to break it. Do so, then go down the stairs to get a memory and some extra teeth. There is also a skeleton sitting on a chair. It is Raz from Psychonauts. He can be identified by the red goggles, his shape, and the position he is in (which is the stance he uses for a mind attack). With this in mind, it looks like Raz is dead, and there will be no Psychonauts 2.Easy "Level-Headed" achievement
Successfully complete the game, then select the final chapter, and go directly to the Boss battle. Defeat the Boss without using Hysteria to get the "Level-Headed" achievement.Achievements
Accomplish the indicated achievement to get the corresponding number of Gamerscore points:
- Everything fit to remember (30 points): Find all Memories.
- Nothing Like the Smell of Bacon (10 points): Pepper All Snouts in a Chapter.
- Seasoned Campaigner (30 points): Pepper All Snouts in the game.
- Shooting the Moon (10 points): Collect 4 Jars of Rose Paint.
- Painting the Town Red (30 points): Complete all Radula Rooms.
- Family memories fond and faded (10 points): Find all Liddell Memories.
- The Persistent Flourish (75 points): Complete the game on Hard Difficulty.
- The Beginning of the End (20 points): Complete Chapter 1 on Nightmare Difficulty.
- Madness Prevails (80 points): Complete the game on Nightmare Difficulty.
- The End of Daze (10 points): Complete Wonderland Chapter 5.
- The Strong Survive (25 points): Complete the game on Easy Difficulty.
- The Imaginative Endure (50 points): Complete the game on Normal Difficulty.
- No quarter! No mercy! (20 points): Defeat 100 Ruin Enemies.
- 52 Pick-Up (20 points): Defeat 52 Card Guards.
- Calm In the Face of Death (30 points): While on your last Rose, kill 5 Enemies without activating Hysteria.
- Beware of the Lagomorph (20 points): Kill 30 enemies with the Clockwork Bomb.
- Cold Arms, Cold Heart (30 points): Defeat the Drowned Sailor without taking any damage.
- Pulling Strings (30 points): Defeat the Dollmaker without taking any damage.
- Dead Hatter (10 points): In American McGee's Alice, complete Behind the Looking Glass.
- Royal Approach (10 points): In American McGee's Alice, complete Queen of Heartsland.
- Full Recovery (50 points): In American McGee's Alice, complete the game.
- Madness Begins (10 points): In American McGee's Alice, complete Village of the Doomed.
- Skool-Leaver (10 points): In American McGee's Alice, complete Fortress of Doors.
- Out of the Woods (10 points): In American McGee's Alice, complete Wonderland Woods.
- Brollyant (20 points): Kill 10 Bitch Babies with Deflection.
- That's Using Your Head (20 points): Complete Off With Her Head Part 2 in under 6 minutes.
- Dress-Ups (10 points): Equip a Different Domain Dress.
- Weapon Schizo (10 points): Hobby Horse to Vorpal Blade to Hobby Horse Combo.
- Ship of Fools (20 points): Complete HMS Gryphon without taking Damage.
- Just peachy (20 points): Collect all Peaches in the Scroll of Destiny.
- Grandmaster (10 points): Complete a Chess Puzzle without failing.
- Venting frustration (10 points): Spend 7 minutes on steam vents.
- Level-Headed (50 points): Finish the game using Hysteria only once.
- Eyes on the Size (10 points): Find the hidden Shrink Sense Decal.
- Grind 'em All! (10 points): Kill 5 Bolterflies in a row with the Pepper Grinder.
- Tea Party (10 points): Destroy 10 Ruin Barriers.
Additionally, there are 14 secret achievements:
- Strike a Deal (10 points): Upgrade a Weapon.
- More than a Mouthful (20 points): Fully upgrade a weapon.
- Armed to the Teeth (30 points): Fully upgrade all weapons.
- Ground Pork (10 points): Acquire the Pepper Grinder.
- Strange Hobby (10 points): Acquire the Hobby Horse.
- Death by Darjeeling (10 points): Acquire the Teapot Cannon.
- Snicker-snack! (10 points): Acquire the Vorpal Blade.
- Grim Folly (10 points): Complete Wonderland Chapter 2.
- When Worlds Collide (10 points): Complete Wonderland Chapter 3.
- The Harder They Fall (10 points): Complete Wonderland Chapter 4.
- No Happy Returns (10 points): Back to Wonderland.
- End of Innocence (10 points): Complete Vale of Tears.
- Hatter's Demise (10 points): Complete Wonderland Chapter 1.
- Neighslayer (10 points): Hit 4 Enemies With a Single Hobby Horse Ground Smash.