Sucks, I really enjoyed the game.
to Digital Extremes (The developers behind the Darkness II) when asked about The Darkness 2 possible DLC:Unfortunately 2K decided against the DLC option for Darkness 2.
The Darkness 2 was among the top shooters of the 2012, with the special quad-wielding feature which had never seen before in any other game. The game was mainly single player but it also did offer a 4 Player co-op Multiplayer with a separate story of its own. After asking around apparently there was a possibility that the planned-but-cancelled DLCs for Darkness 2 were going to continue where the story left off, there was also plans for additional bonus content such as new weapons and darkness relics. However none of those were ever confirmed to the planning phase, they were thrown out when 2K didnít saw necessary for it to continue since the total sales for the game were below 1 Million copies for all three platforms (PC, PS3 and X360).
According to Video Game Charts (above table), The Darkness 2 sold a total of 540,000 copies which is below the expected 1 Million and hence it was financially unacceptable for 2K to spend anymore money on making DLC for the game. The release of Borderlands 2 also contributed to that matter since as one of 2K gameís most successful titles it needed heavy funding for the announced 6 DLCs that were planned for the game.
Although there wont be any DLCs made for Darkness 2, there are still some plans in regards to making a Darkness 3, however at the moment this is only a rumor and no official source has confirmed its validity, but at the same time it hasnít been denied either.