Is this DLC to be played after the main game?

Im already planning on replaying the game in the future to get the "no death" achievement, and mixing that playthrough with another DLC as cool as Stage Fright would be great.

Seeing how there is a new dlc for the game. I bought it and wanted to try it out. Only for the game to not even load up. As it pops up with Couldn't start: "C:\Program Files (x86)\Steam\steamapps\common\OutOfSight\Binaries\Win6 4\OutOfSight-Win64-Shipping.exe" OutOfSight CreateProcess() returned 11c7. Note i have deleted the game. Verified the files. Nothing. I even stopped my antivirus to see if deleting something. But weirdly nothing. I didn't have problems before. I don't know if the hotfix from yest...

thank you for helping me. I need help here..... https://images.steamusercontent.com/ugc/10087159384238468263/2DC8724A5574B8BE6A11C1808113D8F12DF52F00/?imw=5000&imh=5000&ima=fit&impolicy=Letterbox&imcolor=%23000000&letterbox=false i have practised this chase scene over and over and over. The little girl is not fast enough for me to get away. I need help bad!!...

I'm having trouble in chapter 7. I arrived in the room with a wardrobe to lift... The old man isn't chasing me and without lifting the wardrobe I can't proceed.