1. Launch the game "Stickman Triple Kill" on your mobile device.

2. Choose your character from the available stickman assassins with unique appearances and abilities.

3. Select your starting level from the campaign map. Each level increases in difficulty and features different enemies and traps.

4. Use your finger to touch the screen and aim. Drag to adjust the angle of your shot.

5. Release your finger to shoot at enemies. Precision and timing are key to landing kills and avoiding counterattacks.

6. Move your character to safe positions to avoid enemy fire and environmental traps. Tap and drag to reposition as needed.

7. Watch out for obstacles like spikes, falling objects, or explosive barrels that can harm you or be used against enemies.

8. Defeat all enemies in the level to progress. Some enemies require multiple hits or special tactics to overcome.

9. Face powerful bosses at the end of select levels. Learn their attack patterns and strike when they are vulnerable.

10. Collect coins and unlock new weapons and characters to match your playstyle.

11. Complete all levels and master the art of stealth and accuracy to become the ultimate stickman ninja assassin.