ren install.int kextract.exe
kextract duke3d.grp tiles001.art 
kextract duke3d.grp tiles002.art 
kextract duke3d.grp tiles003.art
kextract duke3d.grp tiles016.art
kextract duke3d.grp tiles017.art
kextract duke3d.grp tiles018.art
kextract duke3d.grp tiles019.art
kextract duke3d.grp *.voc
del duke3d.grp
del kextract.exe
del install.pif
del install.bat