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Added a boss somewhere.
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Added an bonus content.
Appears after defeating an additional boss.
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Added new achievements.
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The achievement "Clear Stage 5" has been added.
If you have already cleared it, you can get it by playing again.
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The terrain in the "Corridor of Darkness" has been modified so that it can be broken through regardless of skill acquisition status.
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If you saved the game after clearing the game, the starting area when resuming with the saved data has been changed.
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In areas 1-1 and 1-2, using "turn back" would return to the starting point of 1-1, but this has been changed to return to the previous save point after stage 1 is cleared.
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Fixed a bug in v1_6_0 where "Skill Master" could not be acquired.
If you have already acquired all the skills, you can obtain them by checking the skill tree screen again.
PS : v1_7_1 bug fixed.
Corrected the color of attack effects.