This game produces 1 lag every 2 frames.
Some certain scenes produce more. For example, where players in a motorbike, 2 lags every 3 frames.
The amount of enemies in each scene is settled.
Bosses have a short invincible time.

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When animation is played, player can skip it by pressing A, B, X or Y.
Players will be in a certain coordinate in most of them. So after clearing a stage, adjusting players' coordinate can speed up animation to save time.

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Characters in prison uniform and female characters have a 31-frame circle of tread, while male characters are 25-frame.
Female characters run (also walk) faster than male characters.
Characters in prison uniform cannot perform skills.
So, use male characters to tread, use female characters to run.

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Punch can be performed every 15 or 19(including lags, the same below) frames and deals 3 damage.
Kick, performed every 23 frames, deals 4 damage.
Normally, enemies can be beat down in combination of 3 punches and 1 heavy punch or 2 kicks and 1 heavy kick.
Enemies taking punch fall down slower but closer, taking kick fall down faster but farther.
So, using punch or kick depends on enemies' location and amount.

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Tread deals 3 damage. kneeing deals 8 damage.
Time spent on 3 treads or 1 kneeing is close.
The direction of kneeing can be controlled.
Pressing down can deals damage in advance while jumping by kneeing.
So, use kneeing to leave enemies when they are about to stand up.

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Kunio’s L/R+A has the most powerful strength dealing 25 damage.
Riki’s and Kyouko’s deal 9 damage in a period of time instead of instantly.
Kunio’s and Misako’s can make enemies fall to any distance you want.
So, had better not beat down enemies.
When they are about to be beat down, use Riki’s, Kyouko’s or Kunio’s skills, and then perform tread and kneeing.

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Drive motorbike at the maximum speed as long as it won’t bump into walls.

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In scenes with hooks, characters can deal more damage for unknown reason.

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Pressing A at the first frame to catch hooks will lead to a dislocation.

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The password in the game is regular, except for the motorcycle stage, the password starts from 1010

1010
2010
3010
……
9010
1020
2020
3020
……
1030
2030
3030
……
9030
The third number represents the chapter, the first number represents the stage, and if some of the chapters are too short, a password with a large number will not work.
The password for the finale is 1060, ED is 2060.

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This is a TAS film I made myself, if you encounter difficulties can refer to.

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If you like River City, you can subscribe to my dynamic desktop, thank you
https://gtm.steamproxy.vip/sharedfiles/filedetails/?id=2839270405