Freya survives both the end of Norse Mythology and Ragnarok unlike all the other deities and mythical creatures. Ragnarok and Christianity both end the norse religion, during the twilight of the gods most of the deities die, when Christianity replaced the norse religion many of the gods faded away.

Who is supposed to survive Ragnarok?

Hoenir, Magni, Modi, Njord, Vidar, Vali, and the daughter of Sol are all stated to survive Ragnarok. All of the remaining Æsir then reunite at Ithavllir. Baldr and Hod return from the underworld - Baldr having been killed by Hod, and Hod by Vali, before Ragnarok.

Who kills freyja?

The stanza recounts that Freyja was once promised to an unnamed builder, later revealed to be a jötunn and subsequently killed by Thor (recounted in detail in Gylfaginning chapter 42; see Prose Edda section below).