Hull Rupture Hard difficulty unlock guide
Unlock Hard by completing Classic on Normal. Check how 1.0.15 shares difficulty across modes, what stays locked, and how to plan a Classic clear.
Build and defend a ship while navigating an alien galaxy. The route through your hull is part of the defense.

Complete Classic on Normal to open Hard. See what the difficulty unlock shares across modes and how to plan the 20-wave clear.
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Unlock Hard by completing Classic on Normal. Check how 1.0.15 shares difficulty across modes, what stays locked, and how to plan a Classic clear.
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Game facts checked Nov 11, 2026. Primary source · Steam listing. Artwork: tinyBuild.