Brand new game.
Works perfectly !
Expansion pak is required!!

Besides Area 51 Rescue because of too many unique textures being loaded, all levels work with AI Buddies, some freeze if All Guns cheat is on.

Besides Area 51 Rescue because of too many unique textures being loaded, all levels work with Co-Op.
Area 51 Rescue will load but will freeze if too many Guards shoot at the same time due to the additional GFX being loaded. Theoritically it is playable if both players kill every Guard before they start shooting.

For Counter-Op: Area 51 Rescue doesn’t work because of too many unique textures being loaded, levels with Yoshis don’t work correctly when a Player takes over a Yoshi.
Sometimes everything works out fine. Sometimes the player falls through the floor, which then they die and move on to the next Guard. Other times the game outright freezes. I am not sure why this happens as everything is setup correctly in the levels, and the models themselves work perfectly fine.
Area 51 Rescue will load but will freeze if too many Guards shoot at the same time due to the additional GFX being loaded. Theoritically it is playable if both players kill every Guard before they start shooting.

Each of the levels have had their Descriptions edited to include (No [mode here]) so you will know ingame which levels to not play.

Multiple characters are resized in-game to be bigger or smaller in order for the weapons to fit in their hands. Combined with having different proportions, this causes an issue where running speeds differ between characters with shorter characters running slower than taller ones. While not as bad as the Koopa Troopas in GoldenEye With Mario Characters, this means that most of the Guards move slower than in the original game. Multiplayer is unaffected.

Perfect Dark does this weird thing where a character’s height determines how fast they turn, this gets negated by the Mouse Injector on Emulator but for Console the Toads & other short characters turn super fast. This makes the 2nd & 3rd Bonus Missions harder than in the original game.

While the Level layouts & Objectives are the same as the original game, some have gotten some noteworthy changes that will throw off experts, with a few looking like errors so I’ve made the following list.
This is not a full changelog for the mod so there can still be some surprises, but all important changes are listed here.

DEFECTION

The Secretary (Rosalina) now does melee attacks to be a little more in character. Killing her still fails the mission.

EXTRACTION

The Guard with the Key Card to Cassandra’s Office no longer disappears if Dr. Caroll gets hit or after the lights come back on.

The 2 NPCs looking at the Rocket Launcher (YouTubers SeanKlaskyN64 & russmarrs2) now pull out guns when they see you.

Only the 5 guards near Cassandra (Pauline) need to be killed to complete the Objective which is what you’d assume to be the case in the original game but it’s actually every Female Guard in the Level.

The Rocket Launcher ammo on the roof is now avaliable on Secret & Perfect Agent as it seems silly to me that the ammo would only appear on Agent when the Rocket Launcher is pointless.

VILLA

Snipers no longer appear on Agent since they’re not one of the Objectives, and it helps fit the design philosophy of Levels getting more complex on harder difficulities.

CHICAGO

The Civilians have been moved to inside Punk Pond, which has been overhauled to be the only “custom level” in the mod.

The NPC next to the limo (YouTuber Nintega Dario) no longer runs for help and will instead just stand there unless hit. In which case he’ll pull out a gun and attack you.

AREA 51 INFILITRATION

You no longer have to knock out the Guard near the Robot Interceptor in order to unlock the path to get the Phoenix in A51 Rescue.

AREA 51 RESCUE

Due to so many unique textures being loaded in this mission, Guards no longer have Random Heads and thus all instances of Spawning Clones has been removed/disabled as Clones always spawn with Random Heads.

The Scientist you steal clothes from (YouTuber supermarioglitchy4) now pulls out a gun when he sees you with one. On Perfect Agent he’ll pull out a gun after yelling at you for taking clothes out of someone’s locker.

The Scientist that recognizes you (YouTuber Onyxking67) now pulls out a gun after calling you out.

The Double Doors near the start of the level that lead to the Phoenix are now always unlocked instead of requiring that a specific Guard in A51 Infilitration be knocked out instead of killed.

AREA 51 ESCAPE

I couldn’t figure out a way to lower the Hoverbed, so look towards the ground to get a better grasp of where you at in the beginning.

The Remote Mines are now Proximity Mines and are always available instead of disappearing after 40 seconds.

AIR BASE

The Stewardess you steal clothes from (Movie Mario/Daisy) now runs at an increased speed after seeing you. Something different happens when they sound the alarm.

Something different happens when the Secretary (Rosalina) sounds the alarm.

The door leading to the left side of the base is now unlocked on all difficulties, allowing you to explore and talk to NPCs without having to fail on Perfect Agent.

The 2 Guards who see through your disguise no longer appear before the Takeover, as it doesn’t make sense to me why they would recognise Joanna instead of the Secretary at the front. They do appear during the Takeover.

The NPC in one of the rooms near the Safe (YouTuber dshyanie) will help you out during the Takeover. His AI is a modified copy of Jonathan’s from Area 51 Escape meaning that he’ll follow you and shoot at enemies, but also means he isn’t very good to avoid making the level too easy.

AIR FORCE ONE

The 2 NPCs in the kitchen-like area (TV-Show Mario Bros), and now pull out guns if alerted. They are in their own Guard Group meaning they only alert each other instead of all of the other Guards, allowing you to take their guns and still continue without failing.

The door leading to the front of the plane is now always unlocked, allowing you to explore and look at the Pilots before the Yoshis arrive.

PELAGIC II

Due to being so short, Elvis (Toadette) has trouble walking up the stairs but will teleport when you get far enough away so just play like normal.

DEFENSE

Instead of being randomly chosen between the other Hostage in the room, Grimshaw (Daisy) is now always the one to drop the Devastator. She also now drops it even if some Hostages have been killed.

Jonathan (Luigi) now always appears on Perfect Agent to help while you’re inside Carrington’s Office instead of only after completing Area 51 Escape by opening the Hanger Doors yourself & running out of the building.

ATTACK SHIP

Toadette will struggle to get off of the first lift, standing next to the lift will force her to run to the Navigational Systems Room, helping her get off of the lift. There’s also a check for her do this if she happens to get off of the lift herself. A similar check for if you are standing in the Navigational Systems Room incase you ran ahead without checking.
Toadette sometimes decides to run in circles instead of towards the Navigational Systems Room so if she’s taking too long, go back towards her and she should start going in the right direction. Toadette begins following you like normal after completing the Objective.

Because she can be slow, Toadette will now teleport if you reach the room with the second-to-last lift without her.

SKEDAR/YOSHI RUINS

The Secret Skedar/Yoshi Army now only appears on Perfect Agent, which helps it fit the design philosophy of Levels getting more complex on harder difficulities.

MAIAN/TOAD SOS

To help balance out the new turning speed, you no longer start with Half Health.

Multiple Guards are now Doctors & Biotechnicians with Tranquilizers which do less damage.

It is still possible to destroy the Hoverbed if you accidentally knockout/kill both Doctors at the beginning, it just takes a lot of hits from the Tranquilizer.