Бладехеарт （Bladeheart Ninja）

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+ fix bugs such as carton and black screen.
+ optimize 3 boss, increase boss escape time prompt.
The game will be paused when the boss is exchanging keys, and the two buttons will be dynamically exchanged to optimize the game experience.
+ add tutorial mode and speed mode.
Add a new ranking: speed charts.
+ adjust and return to the main city to re-enter the game level, again to start from the death level, back to the main city again from the initial level.