Fire alarms are the red pull handles on the walls throughout the dream. Interact with the first one you see. Unmissable if you look for it.
Keep pulling every fire alarm you pass on your first run - the game does not say how many 'enough' is, but this unlocks well before the full set, so it comes naturally on the way to Fire Safety Achieved.
Story completion. Play through every chapter to the ending. Unmissable.
There is a hidden nook in the Optical chapter that you have to find. The walkthrough we checked shows it early-to-mid way through Optical. Exact spot not verified by us - follow a collectibles guide or video for the precise location.
Soda cans appear around the vending machines and offices. Pick one up and enlarge or drop it so it breaks. Trivial once you see a can.
A nod to Magritte's painting. In the Clone chapter, find an apple and place it so it covers a figure's head. The walkthrough we checked shows it in the Clone chapter; exact setup not verified by us, so use a video if it does not trigger.
Cloning becomes available in the Clone chapter. Pick an object and keep cloning it over and over until the achievement fires - it takes far more copies than any puzzle needs.
Hidden on Steam. The GOG listing describes it as putting a soda can in the wrong place instead of recycling it. Find a recycling bin and a soda can, then drop the can somewhere other than the bin (a regular trash can is the usual trick).
Try to throw rubbish into a bin and miss. Simple to do near any bin - toss an object at it from a distance and let it bounce off.
Hidden on Steam. The GOG listing describes it as placing a soda can in a recycling bin. Pick up a can and drop it into a recycling bin. Do this, Please Recycle and Take Your Trash Elsewhere at the same bin to clear all three in a couple of minutes.
Drink every soda in the game. Some vending areas only appear in specific chapters, so sweep each one carefully. A collectibles guide is the most reliable way to avoid missing one.
The description is a joke and Steam does not say what the trigger is. The collectibles walkthrough we checked shows it unlocking during normal story progress; we could not verify the exact action, so check a community guide if it has not appeared by the end of the game.
Finish the game in under 60 minutes. Learn the solutions on your first run, then do a focused second run that skips every collectible. Superluminal (under 30 minutes) also covers this if you go for that first.
Turn on developer commentary in the options and play through to the ending with it enabled. Easy to combine with a collectible clean-up run, but do not combine it with the speedrun achievements.
Play a dream (a custom level) made by another player, available through the game's Workshop support. Subscribe to any community dream and load it.
Hidden on Steam. The GOG listing describes it as completing all constellations. These are perspective puzzles hidden around the game where scattered points line up into a shape when viewed from the right spot. The walkthrough we checked counts 7. Use a collectibles guide to find each viewpoint.
A hidden trophy object is tucked away somewhere in the game. We could not verify its exact location - follow a community guide or video for the spot.
Hidden on Steam. The GOG listing describes it as finding all blueprints. Blueprints are hidden collectibles spread across the chapters; the walkthrough we checked counts 15. Sweep for them alongside the chess pieces.
Hidden on Steam. The GOG listing describes it as finding all secret chess pieces. The walkthrough we checked counts 15 across the game. Collect them alongside the blueprints on a collectible run; Kasparov is related.
Complete every challenge in Challenge Mode. Expect some to be strict, such as limits on how you solve each puzzle. Read each challenge's rules before you start a level so you do not waste a run.
Pull every fire alarm in the game. The collectibles walkthrough we checked counts 70 of them across all chapters, several tucked into side rooms or behind perspective puzzles. Use a collectibles guide and sweep chapter by chapter; it pairs well with Fires Extinguished, Chess Master and Feeling Blue.
Pick up and empty every fire extinguisher in the game. The collectibles walkthrough we checked counts 85. Like the alarms, they are spread across every chapter, so grab them alongside the other collectibles on a dedicated clean-up run.
Hidden on Steam. The GOG listing describes it as 'Make the last move'. It is tied to the game's chess theme; we could not verify the exact trigger, so check a community guide - it is commonly done alongside the chess-piece hunt.
Use the game's custom model import feature to bring a 3D model of your own into the game. Any small model file in a supported format will do.
Finish the game in under 30 minutes - half the time of Speed Runner, and both unlock together. You will need a planned route and a lot of practice; community speedrun routes are the best place to start. Do this on its own run with no collectibles and commentary off.
Create a dream (custom level) and upload it to the Steam Workshop. A very simple level is enough.
Upload an item of your own to the Steam Workshop. Easy to do in the same session as Dream Sculptor and Contraband.
