Sooo, let's begin from the animatronics.

First of all, their systems were developed in around 80s so they have slow computing power. They could get visual information 2 times per second, tho well recognise audio sources much frequntly. so that gives you basicly 0.5 sec space in your actions that could be seen, and that will save you.

now let's get back to the bois

We've got our beloved band - Freddy Fazbear, Bonnie the Bunny, Chica the Chicken and Foxy the pirate fox. They wither differently and left in different conditions.
I'll start from least damaged to the most of them.

Freddy Fazbear - tho few of his servos locked up and his mechanisms are snappy and dangerous, he is still mostly intact. He has properly working audial and visual recognition systems as well as mostly fine servomotors - so that makes him the dangerous opponent in the game. You must not use nor flashlight, nor camera flash near him - he will hear flash noise or see flashlight beam. If he spots you - your only hope is to stun him with tazer - this will cause his systems to fail so he would try to reboot to fix it, each reboot takes 30 seconds, s if u'd be lucky enough - u'd be able to stun him for 2 minutes.

PRO TIP: You better not hide under the desk right infront of him since his servos are capable to just throw the table you're hiding under across whole dining area!

Foxy the Pirate fox - his light weight let his servos to age even better than freddy's ones, tho many of his electronics can't work properly due to short circuits. His movements even more snappier than Freddy's, and somehow this makes him a good runner (and a good jumper since he is eqquiped with strong springs and jumping mechanisms to make a surprise shows for kids back in the day).
As i said, tho he is a good runner with mostly intact servos, his electronics are severely damaged. He has probems with facial recognition, audial and visual sensors, so that makes him basicly deaf and very vunerable to bright lights (not blind). To counter his attacks you can flash him to force his systems to restart. If u'd be lucky enough - u'd be able to stun him for 1 minute.

Bonnie the Bunny - his balancing systems, servomotors and electronics trying it's best to balance his body due to missing hand. that makes him slow. Also his visual systems are broken due to his face being ripped of. He is basicly blind, slow, weak, but not deaf, so you can't use your camera flash, because the loud sound will attract him to the source.

PRO TIP: You can disbalance Bonny by running around his mostly intact hand and that will make him fall to the ground, tho don't abuse this ability. You'll face the consequences.

Chica the Chicken - This animatronic in the worst condition - her balancing and audio recognition systems were destroyed, as well as her eyes servomotors are damaged. Her vision tho is allright - she can see, but she can't hear. She has hard time moving at all, not only in a straight line. Due to her damaged eye servos, she has to use her head to lock on her target.

PRO TIP: You can hide under the desk or run around big amount of tables - she would not even try to get you out. She is self aware.