Easy rank changing
I think someone has already posted this, but I didn't find it so I decided to write a clear tutorial.
1. Download SAM (Steam Achievement Manager). There won't be any links, just use your brain and google it.
2. Make sure the game is not running, run SAM_Picker.exe and choose Dead By Daylight.
3. Go to "Statistics" tab. Tick the checkbox below.
Now you're able to edit your survivor/killer rank. DBD_KillerSkulls is your killer's pips, DBD_CamperSkulls is your survivor's pips.
0 is rank 20 with no pips, 90 is rank 1 with 5 pips.
4. Double click on its value and change it to whatever you want.
5. Press "Store" button in the upper-right corner.
6. Close SAM and start the game.
7. ???
8. Profit.
Here are a couple of screenshots just to help you out: imgur.com/a/G1qk2