Quick TakeArticle at a glance
- Rankings below reflect the community vote reported by TheGamer; your own mileage will vary depending on which tools and crests you've found by the time you reach each fight.
- Spoiler warning: boss names and locations below cover the full game, including Act 3.
- More than 2,000 participants voted on a community-built Silksong boss difficulty tier list hosted on Unduel, which TheGamer reported on October 2, 2025 .
These Hollow Knight: Silksong bosses ranked by difficulty come from a community tier list built from over 2,000 fan votes on Unduel and reported by TheGamer: Lost Lace and Skarrsinger Karmelita top the S-tier, with Moss Mother and Voltvyrm sitting at the bottom as the two easiest fights in the game.
Last updated October 12, 2026. Rankings below reflect the community vote reported by TheGamer; your own mileage will vary depending on which tools and crests you’ve found by the time you reach each fight.
Spoiler warning: boss names and locations below cover the full game, including Act 3. If you want to go in blind, bookmark this and come back after you’ve beaten Silksong.
The Community Difficulty Tier List
More than 2,000 participants voted on a community-built Silksong boss difficulty tier list hosted on Unduel, which TheGamer reported on October 2, 2025. The result surprised a lot of players: Savage Beastfly, the boss that got its own hate-subreddit at launch, didn’t end up topping the list.
The fights that actually earned the S-tier spot are both late-game: Lost Lace, the true final boss, and Skarrsinger Karmelita, an Act 3 fight most players don’t reach until they’re already deep into the postgame.
| Tier | Bosses | Why |
|---|---|---|
| S (hardest) | Lost Lace, Skarrsinger Karmelita | Both are endgame fights with long movesets and unforgiving punishes — the consensus picks for the two toughest bosses in Silksong |
| A | Last Judge | A mandatory Act 1 boss with heavy area-of-effect fire attacks and a demanding second phase |
| B | Savage Beastfly, Moorwing | Both notorious for spiking the difficulty curve early, even if they’re not the hardest fights by the numbers |
| D | Fourth Chorus | A mandatory story boss most players clear without much trouble |
| F (easiest) | Moss Mother, Voltvyrm | The two bosses the community agreed are the least threatening in the game |
Why Lost Lace and Skarrsinger Karmelita Top the List
Lost Lace is the true final boss, fought in The Abyss after you’ve found every ending requirement, and it’s built to test everything the game has taught you by that point — multi-phase patterns, tight punish windows, and almost no room for error. Skarrsinger Karmelita, found in the Far Fields late in Act 3, earns its S-tier spot for similar reasons: a demanding moveset you fight well after the game has stopped holding your hand.
Both are optional in the sense that you have to go looking for the content that leads to them, which is part of why they’re harder than anything the main story path throws at you.
Why Savage Beastfly Didn’t Take the Top Spot
Savage Beastfly, found in Hunter’s March, became infamous in the weeks after Silksong launched — players found it difficult enough that an entire subreddit formed just to vent about it, as TechRadar reported at the time.
But once the full community vote came in across the entire boss roster, Beastfly landed in B-tier, not S-tier. The likely reason: it’s one of the first real difficulty spikes most players hit, which makes it feel harder in the moment than bosses players reach later with a fuller tool kit and more practice with Hornet’s moveset.
The Easiest Bosses: Moss Mother and Voltvyrm
If you’re looking for a confidence boost, Moss Mother and Voltvyrm are the two bosses the community agreed are the least threatening in Silksong. Moss Mother is an early mandatory fight that mostly tests whether you understand basic dodge timing, and Voltvyrm’s attacks are telegraphed clearly enough that most players clear it in a handful of attempts.
Full Boss List by Act
Silksong spreads its roster across three acts, with mandatory story bosses and a long list of optional fights tucked into side areas. Here’s where the major ones fall.
| Act | Mandatory Bosses | Notable Optional Bosses |
|---|---|---|
| Act 1 | Moss Mother, Bell Beast, Lace, Fourth Chorus, Sister Splinter, Widow, Last Judge | Moorwing, Savage Beastfly, Skull Tyrant, Great Conchflies |
| Act 2 | Cogwork Dancers, Lace (rematch), Grand Mother Silk | Broodmother, Shakra, First Sinner, Raging Conchfly |
| Act 3 | Shrine Guardian Seth, Nyleth, Crust King Khann, Skarrsinger Karmelita, Lost Lace | Bell Eater, Crawfather, Palestag, Clover Dancers, Voltvyrm |
More Silksong Guides
If Lost Lace is giving you trouble specifically, we’ve got a full Lost Lace boss fight walkthrough. And before you go into any of these fights, it’s worth checking our best Crest builds guide and best Tools, ranked — the right loadout makes every boss on this list meaningfully easier.
Frequently Asked Questions
What is the hardest boss in Hollow Knight: Silksong?
According to a community vote of over 2,000 players reported by TheGamer, Lost Lace (the true final boss) and Skarrsinger Karmelita are tied for the hardest, both landing in S-tier on the community difficulty list.
Is Savage Beastfly the hardest boss in Silksong?
No, despite its reputation at launch. The final community vote put Savage Beastfly in B-tier, not S-tier — it feels harder than it ranks because most players reach it early, before they’ve built up their tool kit.
What is the easiest boss in Hollow Knight: Silksong?
Moss Mother and Voltvyrm were ranked the two easiest bosses in the community difficulty tier list.
How many bosses are in Hollow Knight: Silksong?
Silksong features 44 main bosses and 4 mini-bosses spread across its three acts.
