Overview
Added 2 new difficulty options, optimized save system, optimized disk space and memory usage.
Fixes
Fix an issue that the leaderboard data have errors when the network function is not always turned on.
Fix an issue that pressing Q/E will trigger sound effects during the attack phase of endless mode.
Features
Added 2 new difficulty options "The Swallower" and "Specialized Training".
UI
Implemented the basic framework of the Game Manual, but no content is filled for now, which will be filled in the next version.
Others
Separated the savefile of "Settings" from main savedata, thus avoiding some minor problems caused by the archive reading.
Removed unnecessary auto-save moments to improve the efficiency and stability of auto-save.
Compressed some images, so that the game takes up much less disk space and memory.
Adjusted and optimized some texts.
Lots of English translation adjustments and corrections, thanks to all the enthusiastic players in Discord!