Please note that this requires 2 controllers, you can't play with keyboard and mouse and your friend use controller. I have tested it out and it simply didn't work for me and my friend.

[UPDATED 06-02-2022] This guide also works well with the other 2 DLCs: The Struggle x Little Miss

You guys might run into some common issues not related to Co-op, so check out PC Gaming wiki for more details: https://www.pcgamingwiki.com/wiki/Resident_Evil:_Revelations_2

1. https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=2609474753
   
2. https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=2630969589
   
3. https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=2616843336
   
4. https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=2757157486

1. Go to the configuration file location: "C:\Users\My PC\AppData\Local\CAPCOM\RESIDENT EVIL REVELATIONS2"
   
   
2. Open file config.ini and edit the [JOYPAD] section like this:
   [JOYPAD]
   ProductName=Wireless Controller
   A=1
   B=2
   X=0
   Y=3
   LEFT=POV
   RIGHT=POV
   UP=POV
   DOWN=POV
   START=9
   BACK=8
   LT=4
   LB=6
   RT=5
   RB=7
   LSTICK_PUSH=10
   LSTICK_VERT=Y
   LSTICK_HORZ=X
   RSTICK_PUSH=11
   RSTICK_VERT=RZ
   RSTICK_HORZ=Z
   
3. Save the file, right click/ Properties / Attributes: Read Only (Ticked) and then click OK
   

1. To quickly access RE Revelations 2 directory, go to Steam/Library/Home/Search "revelations 2"
   
2. Right click on Revelations 2/ Manage/ Browse Local Files
   
3. Download the mod here: https://residentevilmodding.boards.net/thread/5169/playstation-button-mod
   
4. Extract the files, you will get a folder name Rev2ButtonsDS4, inside it is another folder called "nativePCNext".
   
5. Copy folder "nativePCNext" and paste it into your game directory, overwrite the file Core.arc.
   
6. In game screenshot:
   

• Once you set up everything, start the game. Press "Shift + Tab" to bring up steam overlay and Right click on your friend's name, choose Remote Play Together.
  
• Start a new game, and once you're done with the 2nd cutscenes, the 2nd player just have to press button OPTIONS on PS4 controller to join in.
  
• Have fun playing the game with your mate.

If you think this guide is helpful, don't forget to share it with your friends and rate it. Thanks for reading my short guide.

[UPDATED 15-03-2022]

Okay, my account recently got hacked by a Russian person. How do I know this? When I can't log in to steam yesterday after several attempts, I got suspicious, by clicking on I forgot my password, I saw my recovery email was changed to ****.ru.
Luckily, I was able to get my account back through Steam support and I will include this quick tutorial on my guides so everyone knows what to do and prepares for the worst. From what I've seen, a lot of people have become victims of these hacks recently.

"I know the war is affecting everyone in Russia, but ♥♥♥♥♥♥♥♥♥♥♥, people also worked hard to have money to buy games just so they can get away from life for a little while.
- There are no excuses for your behavior, you just got greedy and want easy money. What were you trying to do? Were you going to sell this steam account to the highest bidder for some quick buck?
- If you ask people for help, just maybe, someone kind enough will provide assistance. But by trying to steal from others, you're just making it worse for your own people.
- You don't want to get isolated even more now, especially when you need help the most. So please be better and do something else, something productive with your life."

Anyway, let's get back to the main topic.
- STEP 1: Click on Help / Steam Support
- STEP 2: Choose My Account
- STEP 3: Choose Data related to your steam account
- STEP 4: Scroll down, choose Contact steam support
- STEP 5: Provide the details so Steam staff can help you out

• You might want to provide more proof to the staff to prove you're the actual owner of the account.
  
• In my case, I even made a 2nd account just to ask them for their assistance.
  
• I got the password to log in to my account from steam directly, just 1 DAY, what a miracle. But that might not be the case for you, I know it sucks, but please be patient.

In this section, I will share with you what I do to protect my account. If you guys know more, please comment and let everyone know. I will include your name as the original author here.

1. Click on Steam/Settings. Change your password, email contact address, add more security layers to your account.
   
2. The passwords you change should be kept offline, you can write them down in a notebook or something like that.
   
3. Delete auto-fill forms if you're using browsers like Chrome, Opera... to log in to steam. I used this to write steam guides but now no more. I think that was what got me hacked. I never clicked on any odd links sent by strangers and somehow, I still got hacked.