hey im on the 2nd night and im at the point where i got the angry mask and need to put it back. the problem is i need to go through the door in the burial room to get to the walkway BUT the door is locked from the other side. it's the only door that can lead me into the entrance room where i need to be. does anyone know why the door is locked? and how i can finish the "mask" task??

Which game?

the first fatal frame.

by the way.. the door that is locked from the other side wasn't locked before. it didn't have a demon tag or didn't need a key. so im clueless to open it.

If I remember right, there are more masks inside (in the area after using the angry mask) on a post. You can then use the other masks to open other doors.

When you place the mask look at it again,select go through,take the mask,photo the ghost walking,photo hidden ghost,photo weird mask ,grab the joyful mask down the hall,go back to where you had taken the picture of the hidden ghost, take a left,photo ghost examining the sad mask,go through the sad mask,take the sad mask,you will see a pillar with the happy mask,look at the mask,watch the cut scene,fight the Blind Demon,take the happy mask,put it on the wall with the kanji written on it, you will be in the Square Garden,save,examine the tombstone,do the puzzle to unlock the door to the Buddha room,take the mask of reflection,fight the writer,take the mask back to the pillar room,remove the happy mask off the wall,place all masks on the pillar,use the mask of reflection on the door that leads to the weird mask,get the blinding mask,photo the walking ghost,and leave the way you went in. Does this help? If you need more info let me know because I'm close to where you are at.