Introduction
Download patches
(https://steamuserimages-a.akamaihd.net/ugc/2276068616013055426/ED4278FD615685C531CBF6C6916E13AB59CF8593/)
Install patches
Optional: set your game to use the English language, this is to ensure maximum compatibility with this mod. Steam will now download the necessary base files for English.
(https://steamuserimages-a.akamaihd.net/ugc/2111683598809023748/B35C122CF845F5136AC904EBF1142EA5C359DCCD/)
Open Explorer, navigate to your Downloads folder, open another tab in Explorer, navigate to your Steam folder where you have the game installed and place the .ff files that you downloaded from your Downloads folder to; "steamapps\common\Call of Duty Black Ops\zone\Common".
(https://steamuserimages-a.akamaihd.net/ugc/2084660898880067095/1D99FBDE4F25A646129A0964B7CFB44D4FDE51C9/)
You can now play the Ascension, Call of the Dead, Shangri-La and Moon maps as you normally would, but with the ability to complete the Easter eggs with less than four players.
(https://steamuserimages-a.akamaihd.net/ugc/2111684146084221477/64A08F764DFE72DEC1E370E73A840F0EF9B79B46/)
Uninstall patches
(https://steamuserimages-a.akamaihd.net/ugc/2084660645921478428/C39D4750DEE6032AAB85015D0303499BC9E5C8BE/)
Compatible guides
I've tested it with the following guides and it works in games with 1 to 4 players, please ignore steps that aren't relevant anymore (I may make a simplified set of guides since these ones are more complex than they need to be).
It now works with any amount of players, the synchronised buttons step now gives players one-hundred seconds to press all four buttons when not in a four player game, the lander step is solo-able (the LUNA letters are at there original positions in coop) after the pressure plate step (in order: ride the lander near the Revive perk to grab the letter L, ride the lander near the Stamin-Up perk to grab the letter U, ride the lander near the Speed-Cola perk to grab the letter N and ride the lander near the PhD perk to grab the letter A) and the freeing Gersh step only requires the upgraded Zeus Cannon, upgraded Ray Gun and Gersh Device when playing solo.
(https://steamuserimages-a.akamaihd.net/ugc/2084660645921493216/D46D280078B8191FB733F8A7C1B2A1A79E2C2F1D/)
The co-op version of the Call of the Dead Easter egg now works in solo, you no longer have to knife the frozen vodka bottle, you can shoot at the ice encased around it to dislodge it whilst standing below it to catch it in solo, when in co-op the vodka bottle needs to be knifed.
(https://steamuserimages-a.akamaihd.net/ugc/2084660645921520801/4A7CF2730249C6238F8B26423F5B7CCD9AEBA05B/)
It now works with any amount of players and in solo mode the tile matching step now gives the player 100 seconds to match each tile before they reset (crouching on the tiles gives a few seconds to memorise them, standing up starts the timer, do not crouch after the timer has begun as this will clear the tile) and time in eclipse mode has been increased to 20 minutes to accommodate this (the player always spawns as Richtofen when playing solo).
(https://steamuserimages-a.akamaihd.net/ugc/2084660645921521805/FD439258EC2920A44D972F7F586D73B938C31C45/)
It now works with any amount of players, still requires the completion of previous Easter eggs and someone must spawn as Richtofen in the game (the player always spawns as Richtofen when playing solo).
(https://steamuserimages-a.akamaihd.net/ugc/2084660645921522651/A0DEBB549E377F42868C854EF1BC7A80872407ED/)