SKULBUILD
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Achievements

Spider God’s Protection

Dark Mirror

Unlock condition

Site text · review not recorded

Max out one of the damage, health or speed upgrades at the Arachne Clan altar during a run.

Practical tip

Site text · review not recorded

Concentrate bone fragments on one upgrade instead of spreading them out. Budget for skull awakenings as well.

Steam official list · 2026-09-06

About site text

Game wording, site translations and explanations are kept distinct. Site text in every language is subject to review. AI review is not human review; unrecorded checks remain unknown.