This is a odd CD-Rom from 1997 by UK Action, Red Hot is a unofficial expansion pack that contains levels, utilities, tutorials for level making, and patches for Outlaws the classic FPS by LucasArts, Blood, and also Redneck Rampage, This cd came from a website dedicated to FPS Games, Demos, and Shareware and I do not own it, nor do I own this CD either.
To install levels in Redneck Rampage you must have the latest version of DOSBox and edit the files to run on that software, or use RedneckGDX and a addons folder to launch the usermaps.
Installing Blood levels requires the Blood Fresh Supply release from Steam or a sourceport such as NBlood, or BloodGDX, Steamcommunity.com This post has all the info needed to install maps into Outlaws.