Here is a small tool to change difficulty level, activate/deactivate hardcore, retired and dead status for Torchlight's characters.
1) Do a backup of " %appdata%\runic games\torchlight\save" folder (or "%appdata%\Roaming\runic games\torchlight\save" with Windows Vista/7)
2) Install/update Microsoft .NET Framework 2.0 or greater.
3) unzip the zip anywhere.
4) Launch Torchlight Util.exe, Menu file->load, select the Torchlight's savefile corresponding to your character (1.svt, 2.svt, etc... The number depends of character's creation order) in "%appdata%\runic games\torchlight\save" folder (or "%appdata%\Roaming\runic games\torchlight\save" with Windows Vista/7 ? )
5) Modify difficulty and/or modes (or load another .svt file if you selected the wrong character)
6) Click on Save.

http://paulaimik.alwaysdata.net/torchlight/Torchlight_Util_1_0.zip
Some users reported problem with the zip archive, so here is the unzipped exe file (without readme, just copy/paste this topic if you want one)
Alternative link : http://paulaimik.alwaysdata.net/torchlight/Torchlight_Util_1_0.exe
PS : Characters will NOT be tagged as cheater because of this tool.
