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, and the developers have confirmed some achievements are not firing yet.
| Achievement | How to get it | Players |
|---|---|---|
| Boy Scout | Set up your first campfire More → | 95% |
| Heartless | Hidden, no public description | 79% |
| Collector | Pick up 100 different cards More → | 43.2% |
| Space is wrong here | No public description | 25.3% |
| Heavy Handed | Hold 20 cards in 1 hand | 18.9% |
| Spelunker | Map every tunnel of The Forgotten Path More → | 9.1% |
| DIE | Die 10 times | 6% |
| Gunk Slayer | Hidden, no public description More → | 5.7% |
| Soft Headed | No public description | 5% |
| Whatever Man | No public description | 1.6% |
| MURDERER | Murder 1000 creatures. | 0.2% |
| Gloom Slayer | Hidden, no public description More → | 0.1% |
| Urbexer | Hidden, no public description | 0.1% |
| Would you love me if I were a worm? | Kill 10 worms | 0.1% |
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. That may be part of why Gloom Slayer reads 0.1% while Gunk Slayer reads 5.7%. Thread: Steam discussion: No Achievement For Beating game?!?!, 10 September 2026
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, 11 September 2026
The achievements without a description
None of these has a public unlock condition: Heartless, Space is wrong here, Gunk Slayer, Soft Headed, Whatever Man, Gloom Slayer 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, 13 September 2026. What unlocks the others has not been revealed.
What the rare ones tell you
- Spelunker at 9.1% 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 0.2% asks for 1000 creatures killed, the biggest count any achievement asks for.
- Would you love me if I were a worm? at 0.1% needs 10 worms killed. The game does not list which enemies count as worms, so there is no shortcut to point you to.
For how these fit together into a run, see the bosses overview and the walkthrough.