1) u need to load the save form bio or re 1 to 5 all version and use psn buy all DLC whatever u already hv or not 2) use dash attack only form start until the end with all chara in single mode and pro. mode without using any health item. 3) play with wesker and use RPG kill leon over 99999999999 times
u will see a message display : now u can use naked sherry in all story mode and mer. mode.
This can only be done in solo No Hope Left mode (which is currently playable with hacking) with no skills equipped except Lone Wolf:
1) In Chris' campaign, kill all the Napads in the foyer (the room they tell you to run away in) using only the knife.
2) This will initiate a button prompt with Piers, but you have to be quick! They'll high-five, and Carla will congratulate you on your murdering prowess. The OST will now be replaced by Queen's greatest hits for the rest of the play session.
3) Play up through the end of the docks chase sequence in chapter 3 without dying. If you die, you'll have to restart.
4) After shooting down the helicopter, Piers will call you over and say that he found something. Walk over to him, and you'll be met with a locked door. Shoot the handle precisely 7 times with the shotgun to open it. Any more or less, and you'll have to restart.
5) Inside is a vault filled with gold. Quickly take as much as possible before Hoxton and Chains arrive, since they fell behind earlier. Hey, it means more for you!
6) If you manage to successfully collect at least 53% of the gold, Chris will start crying, and yell "I'm not used to escorting men!" Piers' clothes then mysteriously disappear, and the game autosaves.
Congratulations! Now all of the partner characters and Ada will be completely naked forever unless you delete your save file. Doing this also unlocks the hidden Bare Necessities dogtag, which features a picture of Barry oiling up his bare chest.