This is a spin off of the WWH story arc only its Rulk waging war on the DC universe. Rulk is raging through Metropolis fighting against most of DC's heroes. Just like Thor was absent in WWH, Superman will be absent here. Lets say he went to visit Krypton or something along those lines.
Here is the lineup that Rulk faces:
1. Martian Manhunter (fight on Watch Tower)
2. The Street Levelers- Batman, Nightwing, Green Arrow, Cassandra,Black Canary, Richard Dragon, Wildcat, Zatanna
3. Teen Titans- RoBin, Beast Boy, SuperBoy, Static, Blue Beetle
4. Hawkman, Hawkgirl
5. Flash
6. Donna Troy, Super Girl
7. Wonder Woman
8. GL (John Stewart)
9. Etrigan
10. Dr. Fate
11. Captain Marvel (DOV)
Since WWH was partly Based on PIS, for this fight Rulk will have 50% LF going for him.
50% LF powered Rulk rips trough them and absorbs & steals all kinds of things along the way. Then he goes to Krypton, kills Supes with one sucker punch and uppercuts the Spectre.