I don't know where me can write in private messages here, so I'll leave my ideas here. Still the same bunker underground (or maybe not underground, I don't know). The plot is quite simple: The main character is a local security operative, all his colleagues are infected and previously closed by the main character himself in the armory. During this closure, zombies tried to grab him, one of them grabbed a grenade on his uniform and pulled the pin, the explosion miraculously did not kill the main character, the first aid kit partially saved his situation, but now he can't walk and he has no medicine. He have only an MP5 with one magazine and a revolver that he took from a dead officer. The military will not come soon, it's time to kill as many as possible. And now to the mechanics: the MP5 has 30 rounds, but the cartridges for it are rare, they will need to be extracted by shooting at the store's model on a zombie bulletproof vest (there will be a new type of zombie: a zombie security operative, damage to the body is reduced due to the bulletproof vest, usually a cap with a security service emblem on the head). MP5 bullets will kill zombies in the head for longer, but will have a good stopping effect. Sometimes there will be a grenade on a zombie's bulletproof vest, shooting at it, the main character will add it to his interface (because in real life it cannot be blown up, but if it is difficult to add a grenade, then use a grenade explosion through shooting at it, it will kill the nearest zombies and zombies who have a grenade), will be added nearby With the MP5 magazine interface, the revolver cartridges will be endless, but the number of cartridges in the drum leaves much to be desired:D. You can leave the zombie exit mechanics the same as in the original, the 3rd part of the game can be done with movement as in slot machines (Example of the game: Operation GHOST arcade game). in part 3, we will play as the military clearing the bunker of zombies, you can even make a reference to the first game when the military finds the this poor scientist with a wounded leg, but it will be difficult to do because of technical reasons and because I don't know how to make games, so forget what I said:(