Justice League: No Justice
Spinning straight out of the events of Dark Nights: Metal, Justice League: No Justice was a tremendous miniseries launched by Scott Snyder. It explored the impact of the Source Wall's breach, with Brainiac assembling his own Justice League team - with an assortment of heroes and villains. The story essentially served as the transition from Metal through to Snyder's Justice League run, and was a thrilling cosmic tale that saw unusual team-ups working to save entire worlds.
The Justice League Relaunch
Scott Snyder's Justice League has launched to tremendous acclaim. In the aftermath of Dark Nights: Metal, Lex Luthor discovered that cosmic forces had been unleashed in the universe. He assembled a new Legion of Doom to gain control of these forces, to tap into their power and make them his own. The story has been tremendous so far, with the Justice League struggling to catch up with their enemies' plans. But it remains to be seen whether Luthor can keep the team of supervillains together.
Dark Nights: Metal
Scott Snyder's Dark Nights: Metal event was a tremendously effective story, albeit a rather complex one. Snyder's fascination with the idea of dark matter led to the creation of an unseen Multiverse, hidden beneath the surface of DC's existence. Batman unwittingly unleashed the forces that shaped this 'Dark Multiverse,' led by the Dark God Barbatos, comprised of an army of "nightmare" versions of Batman, the most terrifying of which was the Batman Who Laughs - a sinister mash-up of Batman and the Joker.
The climax of Metal saw DC transform their entire universe by breaking the Source Wall that surrounded it. New cosmic forces were unleashed, and the DC world will never be the same again - a tagline often used to refer to comic book events, but this time probably entirely accurate. Dark Nights: Metal was well-received by critics and fans alike, and while it may not have been perfect for every reader (the plot became relatively inaccessible to newcomers, fast), it served particularly effective in setting up the next year's worth of comics.
The Raising of Atlantis and Drowned Earth
It's hardly a surprise that the year has ended with a major Aquaman event; there is a film coming out, after all. But there's been a notable difference between DC's approach and its rival, Marvel's; DC has chosen to mix things up, setting up a very different status quo. The first decision was to raise Atlantis to the surface, setting up a fascinating Suicide Squad arc in which Amanda Waller attempted to sink the island beneath the waves again - by force. All that has led to the Drowned Earth event, which has only just come to a conclusion. It's seen Arthur transported to oceans new, and it remains to be seen what will happen there.
2018 saw the end of James Tynion IV's tremendous Detective Comics run. One of DC's most gifted writers, over the last two years Tynion had crafted a subtle plot in which Batman had attempted to put together a team to police threats to Gotham City. Doctor Manhattan's agents had intervened, removing Tim Drake at a crucial time, and introducing a twisted version of Tim from a dark, dystopian future.
Matters came to a head over the course of this last year, with Batwoman going rogue, and killing Clayface - a villain who Batman had been attempting to redeem. Tynion's was easily one of the strongest comic book runs of the last decade, and it ended in style.