Castlevania: Portrait of Ruin

Portrait of Ruin is another game in the Castlevania series, and the second one made for the Nintendo DS. It features familiar, non-linear, exploration-based 2D sidescrolling & action gameplay, similar to the Metroid series (i.e. a Metroidvania game). Unlike Castlevania: Dawn of Sorrow, Portrait of Ruin is Wi-Fi enabled. Up to 2 players can engage in a co-op mode as one of the two main characters: Jonathan Morris and Charlotte Aulin.

Storyline
The game takes place during World War II where a vampire by the name of Brauner has resurrected Dracula's Castle, a familiar location from previous Castlevania games. Jonathan Morris, a young fighter who wields the vampire killer whip from the Belmont family (but cannot use it to its full potential) and Charlotte Aurin, a young spell caster enter.

Inside, they find the ghost of one of Dracula's victims, who only goes by the name of "Wind", a merchant priest, twin vampire sisters Stella and Loretta, and various magical portraits that act as portals, giving Brauner power.