I have seen other guides on this game some of them good but not clear enough for me so in this guide I'm going to tell you the strategies that got me through each night and they will hopefully help you. I also know that this game can be scary when you start playing but you will get used to it.
Please enjoy the guide. Another quick note if you do end up enjoying this guide and find it useful please check out and subscribe to my YouTube channel at: https://www.youtube.com/channel/UCjmYUIVszKLH_MP9_1GL2Cw to help support me.
video guides may be coming soon.

This is the most important thing in the game it will sound like someone blowing into a mic ( you'll know it when you hear it ) or a quick intake of breath. It may take up to 4 seconds for breathing to start. I recommend having good headphones (without these this game will be very hard or impossible) and the volume to be at, at least 80%.

Bonnie is a big purplish-blue rabbit. He will make his way towards your door from the left side. To get rid of him listen for breathing, if there is breathing shut the door until you hear footsteps then flash the light. If there is no breathing then flash the light and it will scare him away. If Bonnie is at the door for too long and you look at the bed it will result in a jumpscare.
Chica is a giant yellow chicken holding a cupcake. She will make her way towards your door from the right side. To get rid of her listen for breathing, if there is breathing shut the door until you hear footsteps then flash the light. If there is no breathing then flash the light and it will scare her away. If Chica is at the door for too long and you look at the bed it will result in a jumpscare. Unlike Bonnie, Chica can go into the kitchen indicated by the sound of pots and pans.
Freddy is a big brown bear he comes from the bed when enough Freddles accumulate.
To get rid of him flash the light on the Freddles every now and then to get rid of them.
Foxy is a fox that is a pirate. He will run left to right all night and occasionally run to a door. When he runs to a door he will run into the room and hide in the closet unless you stop him. To stop him before he gets to the closet run to the door you hear him run to and shine your light (be careful for Bonnie and Chica because they can still kill you). After you shine your light you should see him leave the hall or at least should hear the running resume. If he gets into the closet he has 4 stages before he will kill you. Stage one is a Foxy plush. Stage two is you'll see his arm poking out into the opening of the closet. Stage three is you'll see him crouching in front of the closet opening. Stage four is you'll see his head poking through the door. If Foxy is left in stage four for too long he will kill you. To send him back stages just hold the closet door shut.
Fredbear is a big yellow bear. He will move left and right much like foxy. to get rid of him in the halls wait for his footsteps to stop and shut the door on the side they stopped on until footsteps resume.When he laughs one of three things may happen. First he may appear as a giant head on the bed if he is on the bed hold the light on him until he disappears. Second he may appear in the closet if this happens hold the closet shut until footsteps resume. Third he might have "fake laughed" as people call it and may continue walking door to door or is still at the door he last stopped at.
Nightmare is just Fredbear but much much more aggressive. If you use your light on a hallway apart from to check for a fake laugh you will most likely die.

Bonnie,
Freddy,
Chica.
So when you load into the room you will notice three doors in front of you one on the left, one in the middle (the closet) and one on the right. On night 1 nothing happens until 3 am so use this time to get used to the controls.

3 A.M.

This is when things actually start to happen so here's what I suggest you get used to doing. Start by going to the left/right door (your choice, in this guide I'll use the left door to start for reference) listen for breathing if you hear breathing shut the door and wait for footsteps leaving the door. When the footsteps are gone open the door and flash the light (if there was no breathing just flash the light).
Then leave the door. Next check the bed for Freddles and keep the light on until all of them are gone.
Then check the right door and do what you did for the left door. Then repeat from the left door and you should get through the night alright.

Bonnie,
Freddy,
Chica,
Foxy
So when you start this night you may notice a running noise going left to right, that is Foxy.
The strategy for this night is pretty much the same as night one except try to follow Foxy door to door to keep him out of the room and follow what I put in the animatronics section of this guide.
I'm going to put this here so that it's done with but, if Foxy gets into the closet you're going to want to get rid of the Freddles to make sure Freddy doesn't kill you. Then go to the closet and hold it shut to get foxy to go back a few stages.

Bonnie,
Freddy,
Chica,
Foxy
This night is pretty similar to night 2 except that it is a little harder. The strategy for night 2 will work here and you should get through without too much trouble.

Bonnie,
Freddy,
Chica,
Foxy
Night 4 the night where things start getting a little hectic. All you need to know is use the strategy from night 3 and don't get all upset when Foxy gets in because night 4 on, it's most likely going to happen. So just remain focused and don't get down and you'll get through alright.

Fredbear
So night 5 you versus Fredbear. This night isn't too hard once you get the hang of it. This night's strategy is to listen for which side Fredbear is on and when he stops moving go to that side and shut the door until footsteps resume. If Fredbear laughs check the door you last heard him go to, flash the light and if he isn't there head to the bed, if he is at the door shut it and continue what you were doing, at the bed if he is on the bed keep the light on him until he disappears. If he wasn't in the hall or on the bed go to the closet and shut it until footsteps start playing again. If footsteps play after the laugh it means he is still in the hallways.

Bonnie,
Freddy,
Chica,
Foxy,
Fredbear
At the start of the night you will be against Bonnie, Chica, Freddy, and Foxy. So I suggest you use the left door, bed, right door strat until Foxy gets in and when Foxy gets in check Freddles then do the pattern closet, right door, left door, bed. This strategy will let you get to the bed and closet in time if you don't spend too long with Foxy or stay at the doors for too long.
This is where things get hard because all the animatronics are replaced with Fredbear which can be hard to transition into. But, if you can easily swap into the Night 5 strat you should be fine.

Bonnie,
Freddy,
Chica,
Foxy,
Nightmare
Nightmare night, one of the bigger challenges of the game. It's pretty much a vamped up version of night 6 so just move fast doing the usual strategy and with a little luck you will get through to 4 a.m.
This time instead of Fredbear appearing Nightmare appears instead. Nightmare is Fredbear except much much more aggressive. To get past Nightmare follow the strategy used for Fredbear but be much faster and I suggest you don't use the flashlight in the halls apart from to check for fake laughs. Using the flashlight may result in just too much time being used before you can make it to the door and shut it on Nightmare. Using this strat and luck you should make it through.

To access night 8 you need to type 20202020 on the extras menu and Nightmare should change to 20202020.
Bonnie,
Freddy,
Chica,
Foxy,
Nightmare
4/20 mode the hardest mode in the game. This night is extremely difficult and unless you get really lucky won't let you win easily. This strategy I've been using in this guide is the strategy that got me through this mode. I will say this I, in my opinion, only made it through the night because Nightmare was merciful and I got lucky. So you just use the strategy I gave you and don't give up if you fail because this night is heavily rng based.
For Nightmare you can't make mistakes and remember always check the door he last went to before checking the bed and closet after a laugh or Nightmare will most likely kill you.

There are 4 different challenges to play after 4/20 mode has been completed. This section will be updated as I complete each challenge.

Blind mode is the first of the four challenges in FNAF 4. On this night you can't see anything but your mouse cursor. This night is heavily reliant on sound and is easiest when Foxy doesn't get into the closet. I also highly recommend using a timer to prepare for 4 a.m.
The strategy for blind mode is the same as Nightmare night's strategy until 4 a.m. but before I go over the 4 a.m. section I will address a few situations that may occur. This night as previously stated is sound reliant so keep Foxy out for an easier time. You should also be sure to go to the closet before 4 a.m. or you most likely won't live to 6 a.m.To make it to the closet easily turn to the bed then put your cursor a little off to the left of the middle of your screen then turn around and click and you should make it.
At 4 a.m. as usual Nightmare comes out. The strategy for 4 a.m. is different than the normal. The new strategy is like before follow him left to right there is no point in using the lights at the door since you can't see anything. The main change to the strategy comes when Nightmare laughs. When he laughs you will want to check the bed. After you check the bed you will have a choice between the door and closet. If you pick the door shut the door immediately and hope you made the right choice. If you picked the closet flash your light and listen for static if you hear static shut the closet otherwise hope you make it to the door. If you use this strategy and with luck you will beat the night.

The mad Freddy night is pretty much just 4/20 mode Freddy so if you don't linger at doors too long you'll have just enough time to get rid of the Freddles.
There are two strategies for this night depending on what happens. The first strat is for when Foxy isn't in the closet. If Foxy isn't in the closet you should do door, door, Freddles, and if Foxy runs up to a door remove Freddles and go to Foxy and continue the strat. The second strat is for if/when Foxy enters the closet. When Foxy enters the closet you will want to go to this strategy, bed, closet, bed, door, door, repeat. This will let you be able to stall Foxy and still get the Freddles. At 4 a.m. Nightmare is the same as normal so do what you did before for him and you should be fine.

This challenge is basically just Foxy starts in the closet and that's about it.
The strategy for this night is pretty simple, what I used was closet, bed, door, door, repeat. It works pretty well the only issue will be Foxy killing you because Bonnie and Chica are taking to long to leave doors. At 4 a.m. the strategy for Nightmare is the same as normal.

This night is a combination of the last 4 challenges the main thing that will kill you in this night is probably bad rng on Bonnie or Chica not leaving doors fast enough where Freddy or Foxy will kill you.
Now for the strategy. You will want to start the night off by going to the closet, to get there easier put your cursor to the left of the screen then quickly put it right then in the middle and click until you hear yourself running. Once at the closet hold it shut for 7 seconds then go to the bed. At the bed you will want to quickly get rid of Freddles then run to the left door. At the left door listen for breathing if there is breathing shut the door until you hear footsteps then flash your light (even if the footsteps play immediately after shutting the door unless you hear breathing as you open the door then shut it again), if there was no breathing then shine your light and head to the right door. At the right door do the same as the left then go to the bed. After clearing Freddles keep your mouse in the middle of the screen and keep clicking until you get to the closet and repeat from the first step in the strategy. Your pattern should be something like, closet, bed, door, door, bed. The reason we go to the bed twice in the pattern is to stop Freddy from attacking.
The 4 a.m. portion of this night is exactly the same as blind modes 4 a.m., so just follow Nightmare and hope you make the right choice on laughs. Something I thought of for laughs is this, if Nightmare laughs without moving and your at the door he went to hold it shut and hope he's there, but if he laughed and you are in the middle of the room check the bed and listen to see if he keeps moving and if he doesn't move go to the door or closet and hope you made the right choice.

This challenge, as the name suggests, is Nightmare as the only active animatronic.
The strategy for this night is different from normal. Nightmare will just run around for the first 20 seconds and any laugh will be fake so use this time to load the doors, bed and closet. After 20 seconds have passed Nightmare will just be doing his usual thing going door to door stopping every now and then. So the basic strategy is the some as normal except when Nightmare laughs if it's before 3 a.m. he has a higher chance to be on the bed or in the closet so check those first. But if it's 3 a.m. or later it's more likely he's at the door so check it first. The only other difference is if you stay somewhere for more than 15 seconds at a time you'll die instantly. Apart from that it's just be fast and hope Nightmare doesn't kill you for no reason.

This challenge is the same as All-Nightmare except you can't see anything so the main strategy is the same except you'll need to make choices on laughs and if you check a door just hold it shut until Nightmare leaves or you die because otherwise you might die anyway. So if you get lucky and make correct choices you should get through just fine. Also remember don't stay anywhere for more than 15 seconds at a time.

Fun with Plushtrap is a minigame that allows you to skip 2 hours on nights 1-6. To win you need to stop Plushtrap on the X. The way I found that works to win this almost every time is wait until you hear Plushtrap run twice then wait for a slow walking noise to play then flash the light and Plushtrap should be on the X.
Fun with BB is very similar to Fun with Plushtrap except it lets you skip 1 hour on nights 7 and 8. The way I found that works to win this almost every time is wait for BB to run twice then count off two seconds from the clock and flash the light and BB should be on the X.

I have used what I learned from playing this game and completing 4/20 mode to create this guide.