I survived a monster apocalypse on earth in my subspace bunker

story plot: you are a XX year old and your girlfriend had just broken over the phone with you after stealing all of your heartburn money you've been doing a year and all she did was take take take and never get anything back to you, what's worse is that she's been hooking up with your step brother your stepfather's son who has raised you since your mother "passed away" when you were very young. What's worse is that for stepfather has disappeared and left debt in your name as well as ruining your mother's company to the point that it could not be salvage. Broke no job no girlfriend and finding out your good family home isn't even blood work took everything from me. That's when calamity happened a horde of monsters came out of nowhere spawning from the ground itself or out of riffs that appeared in the sky monsters that only came from fantasy like d&d. You only survived the year you were able to find a perfect place to stat up base. Only to end up losing everything for ex and step brother barging in and throwing you out into a horde of zombies humans that got infected by undead magic becoming the undead themselves. Then you woke up 2 years before the calamity even started before your so-called girlfriend even broke up with you. Having full memories of how everything worked in your past life you decided to not repeat your last mistake. That's when a blue screen pops up in front of you congratulating you on successfully acquiring the apocalyptic subspace bunker. World logic: Earth has been invaded by a variety of monsters from myths Legends d&d folklore and someone. These creatures are violent either some are very intelligent like human beings or some are savaged animals focusing on also surviving. This calamity has also brought in fantasy viruses or in this case plague in a fantasy setting where undead creatures like zombies and skeletons biting humans or other creatures turning them into undead creatures themselves mindless corpses that wander the planes weaken by the Sun raise. Defeating any monsters allows you to acquire a monster core depending on the level of the monster determines the power of the cores energy that is used to power your bunkers abilities. Subspace Bunker function: your subspace bunker is at level one the space is equal to a small studio apartment with nothing in it and with one furlescent lights in the middle the walls floor and ceiling made of solid concrete. The entrance to your subspace bunker is like of a small iron bunker door. Only you can enter you can allow other people to enter your bunker hostile entities or human beings cannot pass the doors built in barrier. Giving you a portable sustainable safe House where you can summon it anywhere at any time. To level up the space you must gain experience points to do that you must defeat monsters the stronger level a monster is the more experience points you gain the weaker the monster the less experience points you gain. When you level up you get to have a rogue-like system that gives you three options expansion on a room, survival bunker crates, or a room ticket. A room ticket allows you to acquire a new room which will also be a level 1 room but the room would have a thing to it. The downside is any room that you acquire you cannot purchase furnishing or equipment that does not come with it. For example if you chose to acquire a level one weapons locker room it will have the space for you to store weapons but no weapons inside you must acquire it in the world. Perks that come with the bunker. Park one: indestructible barrier from the entrance, this prevents any monsters hostile creatures or even humans who have ill will intent. Even if you keep the door open nothing can get inside without your permission you can use this to your advantage because even though hostile creatures cannot enter does not mean you can use this as a way of killing monsters. You can be safe within your subspace bunker and still be able to farm monster cores. When you defeat a monster the monster will materialize into soft glowing balls of light that merges within your body depending on the level of the monster determines on how much xp you gained from said monster. Perk 2: anything that you bring into your subspace bunker can be preserved to the point that they don't rot or decompose this also means that equipment clothes weapons can be self-repaired well within the subspace bunker. Perk 3: anything outside the subspace bunker like poisonous gas miasma toxic environments and so on will not enter the subspace bunkers environment giving you fresh clean air while within the subspace bunker. Perk 4: within your subspace bunker you have infinite electricity and infinite water even with your level one bunker you do have a old fashioned world war 2 sink and mirror to one side built right into the wall. The water coming from the faucet is drinkable and non-contaminated. On the opposite side of the sink is a metal deposit hatch big enough for a small book opening it is where you dump the monster cores allowing you to power the bunkers power supply as well as water pump system that allows you to magically get infinitish amount of electricity and water. There is a outlet on the east and west side of the bunker so you do have areas where you can plug in things. A touch screen tablet built into the wall next to the entrance of your bunker allowing you to manage not just the energy supply and water system but also gives you a map of how you customize your bunker and how much points you have acquired from the monster cores. Your experience points when you level up grants you ability to expand one of the rooms that you have or acquiring a new room with its own specific characteristics, this also means that you can acquire an elevator that allows you to gain more floors of rooms corridors and so on. This does not affect the amount of power you need to keep your bunker operating.