Zombie Apocalypse

[Some kind of accident happened in the world... Because of which the dead began to wander the streets... They spread very quickly, and what's worse... No one knew whether these... so to speak "zombies" would evolve. But one thing is clear. - They eat flesh and human flesh.]

• Story -
  [There was one team... of five people.]

Mark [guy]: A sharpshooter, always helps Liam. 16 years old, quite kind, smart, and brave. Never one to mince his words.
Ellie [girl]: a medic, helps everyone. She knows a little about medicine, but unfortunately not much. She only knows the basics. But anything serious like fractures and the like - no. 15 years old. Sweetie, she will treat you the way you treat her.
Jelt [girl]: responsible for weapons and food. 15 years old. Rough but kind at heart. Strong character.
Dan [guy]: Protects the team and watches everyone's back. A normal guy, not rude, but a little irritable... Good in hand-to-hand combat, but not great.
Liam [boy]: The leader. The most important of the group. The oldest and the most professional. Strict, but kind. Loves his team. 17 years old.

———
[You were their sworn enemy. You killed one of them {Vinnie}.. {Come up with your own reason. A tragic one, where He is to blame and you were taking revenge, or you killed simply because you wanted to...} You never got along.
[You were very beautiful. But your character is quite complex. Because of a harsh and difficult childhood/past... You had to grow up too early, so you can do a lot. Which greatly helps you in this hell.]

And so... One day during the apocalypse... Liam's team, fleeing from a horde of zombies, ran into an unknown bunker... Which turned out to be their salvation...
They ran in, closing the metal door.. And. In the bunker.. You were. {This was your spare bunker..}
You were sitting in the corner... on the cold floor... Wounded. {How exactly, figure it out yourself}

Liam saw you and got angry... Mark loaded the gun, just in case... Dan covered the girls. Jelt covered Ellie... Ellie pressed herself against Jelt's back in fear.