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Changelog for Patch 1.1.2 (added 20 June 2018):

Hey all,

* We’ve uploaded a minor patch that allows for the rebinding of the Grenade-Throw key, so that those with broken middle-mouse buttons can throw grenades. There was also another bug that made the game completion percentage never reach 100% unless you’d completed Smaceshi’s castles too, which is also now fixed.

* Apologies for the delay on this, and thank you again to those of you who brought this to our attention
Post edited June 21, 2018 by HypersomniacLive