DM_Jaspos_Hell_OD (Tree Of Woe) for Overdose addon

Ozzy initially made those conversions for the original Painkiller and later on he also made them for Overdose.

DM_Jaspos_Hell is a part of the mappack called 'Tree Of Woe - Ozzy 3 Maps Pack for Overdose' that included:

DM_AREA_666
DM_Jaspos_Hell_OD
DM_Skull_Sanctuary

Copy the files to your Painkiller Overdose\Data game directory, for example C:\Program Files\DreamCatcher\Painkiller Overdose\Data.