AbdulAlhazred
Legend
Very roughly, my understanding was:
- Universe is created
- Dawn War begins when Deities and Primordials can't agree on the fate of said universe
- Living Gate is destroyed, which produces (or permits the arrival of) the Shard of Evil
- (possibly a bit later) The Lattice of Heaven is destroyed, permanently ruining the gods' plan for their realm and severely hampering their war effort (along with numerous down-the-line consequences for mortal souls)
- Abyss is created when Tharizdun throws the Shard into the "bottom" of the Elemental Chaos
- First primordial is slain (implicitly: after multiple gods have already died)
- Tharizdun is imprisoned and Asmodeus is his jailer
- The Shard of Evil's influence brings Demons into the conflict
- Io is slain by Erek-Hus, who is then slain by the newly-born Bahamut and Tiamat, the only time they have ever worked perfectly in concert
- The gods finally band together and start helping each other, unlike the primordials, who never really present a united front
- Aberrations are created by (some of) the gods, essentially their "answer" to demons
- He-who-Was is slain by Asmodeus, who steals his divine spark; this transforms his realm into the Nine Hells (it used to be much nicer, apparently)
- Several more gods die, but their sacrifices usually result in significant victories
- (possibly earlier) Merger of various divine domains happens, somehow strengthening them against assault (but weakening them in other ways)
- The primordials, still fighting solo, eventually lose the war of attrition, leading to the gods' Pyrrhic victory
Well, most importantly, a very incomplete victory. They stopped the destruction of the world, but the primordials are at best reduced to marginal influence, being trapped or maimed/killed in various ways. The gods are free to do as they please, for now, but an inevitable consequence of the lack of complete victory must inevitably be the coming of the Dusk War, which they are not prophesied to survive. In essence they're almost like survivors squatting in the ruins of their own civilization waiting for the end of times to come and sweep them up.