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IdleOn - The Incremental MMO Achievements

Official Steam achievement definitions and latest reported global unlock rates, ordered from rarest to most common.

Total achievements276

Rarest rate0.300%

Ultra rare16

Last checkedSep 17, 2026

Delayed official data

Rates and award counts were last observed on Sep 17, 2026.

161

I Sawed...

Upgrade buildings in construction a total of 250 times.

Very rare

3.30%last reported global rate

162

Souped Up Salts

Rank up the Redox Combustion refinery chamber to Rank 10.

Very rare

3.30%last reported global rate

163

Trial by Time

Run from Town to Efaunt's Tomb in under 2 minutes. No teleporting using the World Map.

Very rare

3.30%last reported global rate

164

Veritable Master

Destruction comes to all who cross your path, no matter how many times you cross paths.

Very rare

3.40%last reported global rate

165

Vial Connoisseur

Get 6 vials to Lv. 7, which are the pink ones

Very rare

3.40%last reported global rate

166

Careful, it's Sharp!

Have a stack of exactly 15 Glass Shards in your Storage Chest.

Very rare

3.50%last reported global rate

167

Glory To Nobisect

Unlock the 3rd Divinity God.

Very rare

3.50%last reported global rate

168

I Like This Pet

Get a Breedability III heart on at least 2 Pets within the nest.

Very rare

3.50%last reported global rate

169

Saharan Skull

Get a Golden Skull or higher on every YumYum Desert monster in the Deathnote.

Very rare

3.50%last reported global rate

170

Valley Visitor

Reach World 6, the Spirited Valley! You'll love it here, all the spirits are very friendly!

Very rare

3.50%last reported global rate

171

Tomb Raider

Defeat Snakenhotep on his 1st Difficulty.

Very rare

3.60%last reported global rate

172

Blunder Skull

Get a Copper Skull or higher on every Blunder Hills monster in the Deathnote.

Very rare

3.70%last reported global rate

173

Supernatural Gamer

Reach level 300 on any character! My oh my! This would have been inconceivable just a few years ago!

Very rare

3.70%last reported global rate

174

Zero G Scoring

Get a Score of 10,000,000 or more in the Astro Colosseum

Very rare

3.70%last reported global rate

175

Crystal Championship Bout

Defeat 2000 Crystal Monsters to become the Heavyweight Champion of IdleOn!

Very rare

3.80%last reported global rate

176

Good Plate

Upgrade a meal at the Dinner Menu to the point where it gets a diamond plate!

Very rare

3.80%last reported global rate

177

The Plateauourist

Reach World 5, a personal favorite world of mine! Look, I like lava what can I say.

Very rare

3.80%last reported global rate

178

Naked and Unafraid

Enter the Sewers with no equipment or weapon, and defeat a sewer poop. Don't want to get your stuff dirty after all!

Very rare

3.90%last reported global rate

179

1.5 Ki'log'grams

Have a stack of exactly 1500 Oak Logs in your Storage Chest.

Very rare

4.00%last reported global rate

180

2 Tons of Iron

Have a stack of exactly 2,000 Iron Ore in your Storage Chest.

Very rare

4.00%last reported global rate