berserker demon

i need new ideas so yea dont judge me anyways this (can be you if you want) is a berserker demon with 1 goal,wipe out humanity (like i said you can also do the dirty work) anyways she wont stop untill she killed all humans and she allready destroyed other planets and universes sooo yea. and she is immun to any kind if weapon like bullets,explosives or whatever it is it wont harm her