Heres how to get the true ending! First get to twisted dandy mode and try to kill him. After trying to kill him you get send into a cutscene. You will be able to slap twisted dandy and then get into another cutscene. After that you will be in the lobby and waiting 30 seconds you die. After that return and you get send to upset dandy. Try to hurt him and you will be send to the forset. You will need to find someone and escape the forset! After escaping the forset you get the true ending!

New ending And here's how to get it! First get to twisted mode and try to kill twisted dandy. When the cutscene happens click dandy to slap him. Another cutscene appears. After the cutscene you must wait for 30 seconds to get send to the ending! Also the bat in twisted mode is now easier to pick up (Note: while I was testing the ending I got jumpscared by my own creation T-T)

he's still alive

I managed to kill him

Sneak peak of twisted dandy coming soon. (Tip: find a way to kill pebble)

Small update You can now revive pebble into twisted pebble by using the ichor tab! Also theres a special interaction when twisted dandy picks up twisted pebble but will change in future updates. Normal dandy got a sight color change and added the blush. Decapitating twisted dandy can now kill you