Fixed an issue where a rule was not being understood correctly by many players, making the difficulty seem unusually high.

The rule is that if you point the antenna of the radio in the direction of the enemy, you can hear their voice and thus determine the direction of the enemy.
Since this was not understood by many people, the difficulty level became higher than intended.

To solve this problem, I added two needles to the radio.
The left needle reacts to distance. This is the same as before.
I made the right needle react when the radio antenna is pointed in the direction of the enemy.
I think this makes the rules easier to understand visually.

If you didn't know the rules as explained earlier, and the difficulty level was too high for you to complete the game, please try this version v1.1.0.

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Also, the difficulty setting has been changed.

- Added a beginner mode (can be completed in about 10 minutes if you get used to it)
- Changed the number of dolls from 5 to 3 in "easy" mode.