Clean all the Snow Secret Ending: 100% Unlock Requirement

Quick answer

The Secret Ending in Clean all the Snow is tied to reaching 100% snow cleanup. The official game description states: "Hit 100% to unlock the SECRET ENDING!" A finished run is not enough — the secret ending badge needs a full clear. Most runs that look finished stall at 96–99% because the percentage counts snow the camera skipped.

100% completion and the percentage counter

The 100% badge condition belongs to the Secret Ending, and most runs that "look finished" stall at 96–99% because the percentage counts snow the camera skipped. The counter grades snow volume the server still owns, not what the screenshot looks like.

A fan guide notes that "the percentage lies if you only look forward" and that "that last 3% is why people miss the secret ending." The official before/after art shows a fully black driveway next to a still-white porch, which is why a clean driveway alone does not mean completion. The core problem is that 100% is not the same as "the driveway looks clean."

Leftover snow hideouts on the house lot

Tips

Driveway specks

Any white on asphalt still counts.

Garage-door rail

Check the rail and the two feet of wall beside it.

Front steps and porch

Check the steps, the mat, and under the porch railing.

Fence

Check the entire fence, both faces, including the neighbor side.

Behind bins and vents

Check behind bins, vents, and your own dump pile.

Curb cuts and mailbox bases

Check curb cuts and mailbox bases.

Back mound shadow side

Check the shadow side of the back mound after a Molotov.

Newly unlocked street

Check the street you unlocked in the last two minutes while celebrating.

Walk the property line once slowly rather than spiraling. Pitch the camera down along fence bottoms, garage door rails, and the shady side of the house.

School Map leftover snow locations

Mistakes to avoid

Problem

Courtyard U-bars

Fix

Blowers scatter snow under racks, so check every U-bar in the courtyard.

Problem

Stair treads

Fix

Aim the camera at the riser on each stair tread.

Problem

Bus loop curb

Fix

Plows miss the seam, so check the curb of the bus loop after a Plow pass.

Problem

Bleachers and portable-classroom skirts

Fix

Check the bleachers, portable-classroom skirts, and the rim of the marketing mound.

Problem

Newly opened wing

Fix

Check the wing you opened while the tank was already full.

Mistakes to avoid

Problem	Fix
Courtyard U-bars	Blowers scatter snow under racks, so check every U-bar in the courtyard.
Stair treads	Aim the camera at the riser on each stair tread.
Bus loop curb	Plows miss the seam, so check the curb of the bus loop after a Plow pass.
Bleachers and portable-classroom skirts	Check the bleachers, portable-classroom skirts, and the rim of the marketing mound.
Newly opened wing	Check the wing you opened while the tank was already full.

If the bar is yellow, do not open another hallway.

Tool discipline for the last few percent

Failure reasons

Problem

Using the Snow Blower or Snow Plow at high percentages

Fix

Holster them, because they create leftover snow at this stage. Holster the Snow Blower at 98% or you will undo a secret ending lap.

Problem

Using the wrong tool for the last three percent

Fix

Use the Vacuum as the default — beam the base, not the sky. Use the Shovel under benches and car skirts as tweezers. Use the Molotov only if a monument is the remaining chunk, then Vacuum ash-adjacent flakes.

Problem

Missing geometry or a newly unlocked street

Fix

Run a two-minute drill after you think you are done: pitch the camera, run the eight house points or the School list, then look at the bar. If it moved, you found geometry; if it did not, you missed a newly unlocked street.

Failure reasons

Problem	Fix
Using the Snow Blower or Snow Plow at high percentages	Holster them, because they create leftover snow at this stage. Holster the Snow Blower at 98% or you will undo a secret ending lap.
Using the wrong tool for the last three percent	Use the Vacuum as the default — beam the base, not the sky. Use the Shovel under benches and car skirts as tweezers. Use the Molotov only if a monument is the remaining chunk, then Vacuum ash-adjacent flakes.
Missing geometry or a newly unlocked street	Run a two-minute drill after you think you are done: pitch the camera, run the eight house points or the School list, then look at the bar. If it moved, you found geometry; if it did not, you missed a newly unlocked street.

The Vacuum is described as "the Secret Ending tool."

Ending badges and the Normal Ending relationship

Roblox badge data shows three awards: Secret Ending, Normal Ending, and School Ending. Secret is rarer than Normal. The NORMAL ENDING! badge description says: "You won the Normal Ending! Play again to win the SECRET Ending!"

A video playthrough confirms the ending choice is voted on: "Oh, and we picked the secret ending," after the game prompted players to choose between helping with the roof or the basement. The badge names are described as a checksum: "SECRET ENDING!, NORMAL ENDING!, School Ending."

The vote-based ending choice and the 100% completion unlock are not fully reconciled in the available material. Treat the vote as the ending selection and 100% completion as the badge requirement, and check in-game which condition actually awards the SECRET ENDING! badge.

Failure points that prevent the Secret Ending

Common failure points: leaving snow that the server still counts (fences, porches, curb corners, under racks); using the Snow Blower or Plow at high percentages and moving counted snow onto a clean rectangle; opening new hallways on a yellow timer instead of sweeping; and treating the percentage as a visual check rather than a server count.

In co-op, if you are at 80% on red, you already lost Secret; go for a clean Normal or reset. If you see scripts auto-pathing through a 12-stack and dump vents looking like a teleport rave, assume Secret is dead on that server and go play a clean lobby.