Hell is full and Cerberus isn't the only one protecting it. Behead human souls with the reaper in this bloody action game, Time to cut them off! There isn't enough room for that many souls, it will take some more years for that. Until then, send the extra to the limbo. Mouse's left-button and the variation of its uses, like double clicks and holding attacks, is what the reaper can use against them. Make sure to keep an eye in the refill bar and don't get out of stamina. Kill as many humans as possible, keeping them away from hell.