Objective:
Survive the night shifts at Freddy Fazbear's Pizza, where animatronic characters come to life and attempt to get you.
Basic Gameplay Mechanics fnaf 2 game:

Camera System:

You can toggle between different camera feeds to monitor the animatronics' locations.
Use the map to track their movements.

Flashlight:

You have a limited battery for your flashlight. Use it wisely to ward off animatronics that get too close.
Flashlight is especially important for fending off Foxy.

Masks:

You can put on a Freddy Fazbear mask to trick some animatronics into thinking you are one of them.
This is crucial for avoiding attacks from certain characters.

Doors:

You can close the left and right doors to block animatronics from entering your office.
Use this sparingly, as keeping the doors closed drains your power.

Tips for Survival:

Listen Carefully: Audio cues are essential. Each animatronic has a distinctive sound that indicates their approach.
Monitor Power Usage: Keep an eye on your power meter. If it runs out, you’ll be defenseless.
Learn Animatronic Patterns: Each character has specific behaviors. Understanding these can help you predict their movements.
Stay Calm: Panicking can lead to mistakes. Stay focused on monitoring the cameras and managing your resources.

Animatronics to Watch Out For:

Freddy Fazbear: Moves slowly but can be lethal if you don't put on the mask in time.
Bonnie: Can enter through the left side. Use the mask when he gets close.
Chica: Approaches from the right. Similar strategy as Bonnie.
Foxy: Will appear in the hallway. Use your flashlight to scare him away.
The Puppet: Must be kept at bay by winding up the music box in the security room.

Conclusion
Surviving in FNAF 2 requires a combination of strategy, quick reflexes, and good resource management. Pay attention to the sounds and visual cues, and you'll improve your chances of making it through the night!