To start the action with the fighter from the left side you need to follow a couple of steps:

• Press letter 'W' - jump.
• Press letter 'A' - to move left.
• Press letter 'D' - to move right.
• Press 'Space bar' - to hit the enemy.

To start the action with the fighter from the right side you need to follow a couple of steps:

• Press arrow '↑' - jump.
• Press arrow '←' - to move left.
• Press arrow '→' - to move right.
• Press arrow '↓' - to hit the enemy.