First let me note i purchased the game on GOG and i dont know if it differs by platform, and second, im using Windows.

This is a step by step guide to delete all savedata including Challenges/Secrets:

1.) Make sure you have view hidden files turned on. (http://windows.microsoft.com/en-us/windows/show-hidden-files#show-hidden-files=windows-7) 2.) Open your C: drive in windows explorer(or whatever drive your OS is on) 3.) Click on Users 4.) Click on your accounts name 5.) Click on AppData 6.) Click on LocalLow 7.) Click on SUPERHOT_Team 8.) Click on SUPERHOT 9) There should be a file named super.hot. This file contains your save data. You can remove this file, and when you nest start superhot, it will generate a fresh file.

I have my drives set up kind of weird, so please try this out and let me know if it works for you. Cheers!

I and a few others have found this glitch, but i didn't see it posted on these forums, so i made a video showing it. 1.) It can be done with any melee weapon. 2.) It is done by picking up a melee weapon, attacking with it, hot switching to an enemy, then picking up the melee weapon you were holding before you switched. 3.) The glitch changes your FOV and dupes the melee weapon you were holding BUT once you use the weapon that is in your hands, the second weapon disappears. 4.) The glitched FOV doesn't increase your melee distance. 5.) if you attack an ITEM like a bottle/painting/etc. after you do the glitch, your FOV will continue to increase each time, but once the weapon breaks, it is reset.

Since the duped weapon disappears after the original leaves your hands, i dont think it has any uses, but you guys are probably a lot smarter than me, so please prove me wrong!