Hollow Knight: Silksong is already a very difficult game. Long runbacks and horribly punishing platforming segments have been hot topics in the first few weeks of release, but as is the case with all difficult games, people find ways to push the challenge to its limits. And one player may have found the ultimate way to do it in Silksong.
u/Thhaki discovered that if you run out of Flea Brew, which increases movement and attack speed, you can throw a bottle at an enemy to deal some damage. They didn't turn this fun little discovery into a challenging run, but the logistics of every Flea-Brew play were quickly discussed, and just the thought was unsettling.
How the Flea Brewing Only Silksong Playthrough Works
There are a few obstacles to overcome here. The biggest thing is that there is only one bottle and it costs 10 pieces to replace. u/Apart-Pain2196 suggested using the Architect Crest, which allows you to use silk to create new tools from pieces of bark off your bench. u/Irdes said it would work with Druid's Eye, which converts damage to silk.
“You also need enough shards to actually kill anything, so for a final boss with 1,800 HP, assuming the bottles do 10 damage (I can't find the numbers on the wiki), to repair the bottles at a rate of 10 shards per bottle […] There are 990 13 shard bundles left for the final boss alone. “As long as you never miss (this again assumes you do 10 damage per throw, which I think is the best case scenario)” u/hgeyoyo10 was kind enough to crunch the numbers: “Okay, okay, let's do it.”
Others have suggested much simpler solutions, but this somewhat goes against the spirit of running the challenge. This means fighting the enemy normally, but using the damage calculator to see if the final hit is dealt by the flea bottle.
Either way, this novel detail has already got the community excited about how something so trivial can be used to make a difficult game even more difficult, and I'd love to see those conversations come to fruition. Or perhaps Flea Brew.
- released
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September 4, 2025
- ESRB
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Anyone 10 years and older / fantasy violence, mild gore
- developer
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team cherry
- publisher
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team cherry

