After beating the two in - game bosses , ( the green ' Gobblin ' and the final boss ' Mesmerelda ' ) , the player receives the ' Witch 's Key ' which allows them unlock various locations in the earlier areas .
After beating the games two bosses ; the green ' Gobblin ' a face like creature similar to Ms. Pac - Man , and the final boss ' Mesmerelda ' . 
 The player receives the ' Witch 's Key ' which allows them unlock various locations in the earlier areas .