After about weeks, finally back with Brutal Doom one more time. This time an unexpected hero joined the fight against demonic Invasion, an undead gunfighter who has his own scores to settle against the demons. This is the part 1 of Unholy Realms megawad gameplay. Here are the mods that are used to alter the Doom experience:
1) Brutal Doom V21 (primary)
2) Ripper Chaingun Addon
3) Desert Eagle Addon
4) Spider Mastermind Chaingun Addon
5) Spray Can Addon
6) Companion Mod- Caleb
7) Duke Nukem over Doomguy
Note: The version of Caleb as a companion uses modified sprites of Corvus, the player character of Heretic and carries an SMG, flamethrower, Hellish Missile Launcher, Cyberdemon RPG and Unmaker which he uses eventually.