Scott listened to us and released an update that may make Night 4 easier. Apparently the minireenas can be shaken off with less wiggles on average. I'll leave my original guide up because it can still be helpful..

Ok here goes. I think Night 4 is too difficult, it takes some luck to pass it. That said, here's my guide, and I've passed it twice, so it's not all luck, there is a method that you can repeat and it will eventually work. If you want to know how to pass Night 4 legit., or what the centre minireenas do, or about ballory's stare and that flashing red light, well, this guide may or may not help!

GUIDE:

CONTROLS:
Mouse: Move pointer
Left click(HOLD, not click): Wind locks anti-clockwise
A+D: Wiggle


MECHANICS:
This night is approx. 3 minutes long. Using a timer might help. You can start it exactly after baby says "I'd recommend..." and the springlocks activate/start unwinding.

You move the pointer around to see where the left (or right) minireena are, and to click on the locks. You will want to focus entirely on the locks as you do not get any spare time to do anything else.

You must wind all ten locks anti-clockwise to stay alive. If any single lock unwinds 360 degrees clockwise to the 12 o'clock position then you lose. If a minireena climbs all the way to the top then you lose.

By the end of the night, all of your locks will be close to 12 o'clock and flashing red, with a minireena climber at the top right of the screen, with the screen fading out to black if you did it correctly.


WIND STRATEGY:
Here's how I did it. Before Baby opens up the mask, inspect the locks, find the lock or group of locks that is most turned clockwise (most unwound / closest to gameover), and that is your starting position. The locks starting positions are random, and If the locks look too bad, spam wiggle A+D to end the night quickly (this also demonstrates why non-strategic wiggling will make you lose) so you can restart with better locks. Ideally you want most of the locks close to 12 o'clock with only a few at 6 o'clock or farther.

Now that you have your starting position, wind that lock to twelve or one o'clock. Don't overwind it, as you don't have time to lose, once you wind it close to fully wound move onto the next lock immediately.

[(Completionist note: Once you wind it to 12 o'clock it won't wind farther, you just waste time. There is a small pause before unwinding after you wind a gear, but not enough that I found it useful to spam different gears)]

Always HOLD down the mouse button. Never let it go. The gears will wind as soon as you mouseover them- it doesn't appear to matter where on the gear you mouseover, and rotating the mouse over the gear doesn't make them wind any faster. I mouseover the centre of the gears. There's no reason to ever release the mouse button during this night.

So you can move over to the next lock in a clockwise or counter-clockwise direction. It's up to you how you do it, but they mostly unwind at the same speed (wiggling may upset this), so keep moving around the gears and winding them to 12 or 1 o'clock. Doing the gears in an orderly fashion makes it easier to keep all of the gears evenly wound, and you won't have to panic to check which gear is close until the end.

KEEP the gears evenly wound. This is important. As the night proceeds, it will become harder and harder to keep them at 1 o'clock, and you will find that you are winding them all to 3 o'clock, then 6 o'clock, then 7-9 o'clock, until eventually you are struggling and keeping all of the gears at 10-11 o'clock near the end. This seems to be normal, unfortunately.. even when you do when everything right you will be very close to a gameover. Expect this night to take several tries to complete.

So towards the end, you will have to focus on not getting a gameover, which means not letting a single gear reach 12 o'clock. If you have to do gears out of order or focus on one side or group of gears more, do that. Whatever happens, don't let any gear hit 12 o'clock, as that is game over.


WIGGLE STRATEGY:

You wiggle to shake off the minireenas that climb up the sides. They will take 1-5 keypresses (random) and it affects minireenas on the right and left at the same time.

Wiggling will increment all of the locks, bringing you closer to gameover. Since the locks increment faster overall than you can wind them back, this means every single time you hit A or D, will make your eventual gameover that much more likely. You need to wiggle as few times as possible.

If a minireena reaches the top of the screen by climbing the sides, you get a gameover.

Therefore, even though it hurts you by making you die faster, you have to wiggle to dislodge the minireenas before they reach the top.

Taking all of the above into account, you MUST NOT wiggle unless you have to, and you MUST wiggle the absolute minimum number of times needed to survive the night.

So what is the absolute minimum number of wiggles needed?

The minireenas will climb the side of your mask in pairs. The right minireena will always be ahead of the left minireena and as the night goes on, he will get farther and farther ahead. The trick is, since wiggling affects both minireenas at once, NEVER wiggle if you can't see the left minireena. Wiggling before then will just give you a gameover eventually.

So you only need to watch out for the LEFT minireena, then wiggle until he falls off, then check the RIGHT minireena to make sure he was knocked off as well (while winding, of course).

Here's the INTERESTING THING. If you read thus far, this guide is not that dissimilar to the other Night 4 guides, but I haven't seen any of them mention this, and it's IMPORTANT. At the end of the night, you will get a minireena on the right who is so far ahead of the left minireena that they won't appear. DO NOT WIGGLE no matter how far up the right he gets. All of your dials will be at 9-11 o'clock at this point, and knocking this minireena off will give you a gameover. You've been warned- the general idea is: if you think wiggling will give you a dial gameover, that is the time, not to do it. If done right, you will get the screen fade to black before he reaches the top.

This next part is UNCONFIRMED-INARTY, but it is how I do it. Waiting for as long as possible with the minireenas before wiggling MIGHT delay the onset of the next pair, giving you more time overall to SURVIVE THE NIGHT. So wait until the first few RIGHT minireenas have nearly reached the top before wiggling, if you attempt this strategy, instead of when you spot the left minireena. This is somewhat opposite to the strategy of wiggling as soon as you see the left minireena. Obviously, you still have to let the final right minireena get close to the top.

So... how should I wiggle exactly?

You want to press the A and/or D keys the minimum number of times. You don't even need both, you can use just A or D. Also it doesn't seem to matter if you pause before keypresses. Therefore, unless the minireena is right at the top, wiggle SLOWLY. You want to press A or D the fewest times, as each press advances the dials randomly.


HALP IVE FALLEN DOWN AND I CANT GET UP. WHAT ABOUT THE CENTRE MINIREENAS?

As far as I know, they are just a DISTRACTION. They might be related to how much time is left or how bad your dial position is, I haven't tested for the latter yet although it's very easy to test. I would just ignore them, and focus on surviving the night.


HALP BALLORA IS STARING AT ME, AND WHAT'S THAT RED LIGHT?

It is your impending DOOM.


THANKS FOR YOUR GUIDE, BUT I STILL CAN'T PASS NIGHT 4

Well you didn't hear it here, but if Sister Location is like the other FNAFs, with the assistance of a text editor there will be another way to pass night 4, although it would be cheating. Hopefully Scott will just release a patch that tones down night 4, but he usually hasn't reduced difficulty in the past. I only ever managed to beat 10/20s twice myself with weeks of attempts.

Cheating hint: Change current=4 to current=5.

I haven't tested that, but I would assume it works.

I just tested night 4 with the new difficulty, and in 3 attempts I beat it twice, only failing on the first . The first attempt was with very bad starting dials, and I'm not sure what killed me. The third attempt had good starting dials.

It felt like it was easier to keep the dials wound up at the beginning, but harder towards the end. It was overall easier than prepatch- and it definitely felt like the miniveenas took like shakes like the update says, since they took at most 3 shakes, instead of 5 at most prepatch.

Also the last miniveena on the right looked like it was going to kill me, and one popped his head out at the left, so I shook it off, but the left one definitely would not have time to kill me since it faded out after that.

I believe it was the fifth miniveena on the right. So they come in 5 pairs. I was trying to delay them by waiting until the right miniveena got near the top each time, but it didn't seem to help much. Maybe it does, I will keep testing to see if I get a 6th pair of miniveenas

FURTHER TESTING:

I knocked off the first 4 pairs like usual, except not caring about how far up the right miniveena got to. I then knocked off the 5th right miniveena early, or when I felt the dials were in good order. I then focused on dials for the rest of the night, ignoring the 5th left miniveena. This resulted in a win.


CONCLUSION:

It's definitely easier now, it should be passable within a few attempts. I will keep testing to make sure I can pass it within 3 attempts- but 2/3 wins already looks good. It might be an idea to attempt a "no deaths" run now.

Listen for directional sound.

Use minimal power:
Don't look at cameras right away.
Don't look at cameras if he transitions to a new area. 99% of the time you'll waste power.
Exception: If it's past 4am, start checking, and when Ennard says Hello.
Look at cameras if he starts moving around in the new area.
Open locks as soon as he moves.
Close locks if he moves again as soon as you open a lock and its 4-5am.
Clock locks if hes 1 away from exit and he moves and its 5am.
Try to get to 5am with 21-25% power.
Continue to use power conservatively even if 20%+ seems like a lot of power leftover at 5am, it runs out faster than you'd think.
Remember, the real threat is at 5am, you shouldn't panic too much before then- you will only waste power that you need at 5am.
The ultimate threat is the battery running out. As long as you react to Ennard (sometimes his movement is really quiet) he won't be able to jumpscare you. You should be dying only to battery fails until you get the power conservation down.

If you're running out of power by 3am then you're using way too much power, you need a serious amount of power to safely survive 5am imo.

^^
After the update to Night 4, Night 5(b) should be your new stopgap as the most difficult section in the game.


Sometimes you just lose:
The sound always plays. Ennard can mask his movement with his voice.

Even with perfect play (barely touching the cameras), you will still run out of power sometimes. This is most likely to happen if Ennard reaches the door by 12-1 am as sometimes he will hang outside the door without moving.

If this happens once or twice early on where he camps the door, then you won't even have 70% power by 2am, 50% power by 3am, and you'll hit 10% power by 5am, which means failure.

I'm currently searching for the 4th star, if I obtain it, I'll upload the video then try and finish a 2 ennard wins in a row video.