Shroom and Gloom achievements
14 achievements, 7 of them with no public description. The percentages are Steam’s share of all players it has credited with each one. Some achievements did not fire at launch, and the first patch lists fixes for two of them.
| Achievement | How to get it | Players |
|---|---|---|
| Boy Scout | Set up your first campfire More → | 95.7% |
| Heartless | Hidden, no public description | 83.7% |
| Collector | Pick up 100 different cards More → | 59.8% |
| Gloom Slayer | Hidden, no public description More → | 42.3% |
| Space is wrong here | No public description | 34.3% |
| Heavy Handed | Hold 20 cards in 1 hand | 31.4% |
| Spelunker | Map every tunnel of The Forgotten Path More → | 22.6% |
| Gunk Slayer | Hidden, no public description More → | 19.4% |
| DIE | Die 10 times | 16% |
| Soft Headed | No public description | 7.8% |
| Whatever Man | No public description | 5.9% |
| MURDERER | Murder 1000 creatures. | 3.9% |
| Urbexer | Hidden, no public description | 2.3% |
| Would you love me if I were a worm? | Kill 10 worms | 1.2% |
Names, descriptions and percentages from the Steam global achievements page.
Known problems
Boss kills not counting
Several players beat the final boss and got nothing; one reported beating the Gloom Worm three more times without the unlock Thread: Steam discussion: No Achievement For Beating game?!?!. Patch 0.6.24 listed a fix for Gloom Slayer Patch: Steam announcement: Shroom Patch Notes: 0.6.24, and 0.6.41 says more achievement-award bugs were fixed (in Steam announcement: Shroom Patch Notes: 0.6.41). Gloom Slayer currently reads 42.3% against Gunk Slayer’s 19.4%; neither patch says whether kills from before it were credited retroactively.
The toad awards the wrong one
A player fed the toad three times and still received the achievement for ignoring it. The developers answered that they are aware of it and working on it. Thread: Steam discussion: Toad king gives the wrong achievement
The achievements without a description
None of these has a public unlock condition: Heartless, Gloom Slayer, Space is wrong here, Gunk Slayer, Soft Headed, Whatever Man and Urbexer. Steam’s store data flags 4 of them as hidden achievements; for the others it only shows no description. Two can be pinned down from Steam’s internal names, which are public through its web API even when the description is not: Gunk Slayer is FLAG_KILL_GUNKWORM and Gloom Slayer is FLAG_KILL_GLOOMWORM, per the Steam Web API: global achievement percentages for Shroom and Gloom. What unlocks the others has not been revealed.
What the rare ones tell you
- Urbexer at 2.3% is the rarest on the list and hidden. Players think it is for fully mapping The Facility, and report that the room before the final boss never counts as discovered; the reports are on the Facility page.
- Spelunker at 22.6% is the most useful signal on the list: mapping every tunnel of The Forgotten Path is also what players believe unlocks the Concerned Parent, covered on characters and unlocks.
- MURDERER at 3.9% asks for 1000 creatures killed, the biggest count any achievement asks for.
- Would you love me if I were a worm? at 1.2% needs 10 worms killed. The game does not list which enemies count as worms, so there is no shortcut to point you to. It is the other achievement patch 0.6.24 lists as fixed (in Steam announcement: Shroom Patch Notes: 0.6.24).
For how these fit together into a run, see the bosses overview and the walkthrough.