Sub Terra II: Arima's Light

From the publisher:

The Arima's Light expansion for Sub Terra II introduces 5 new characters for explorers to play as, the Magician, the Escape Artist, the Fortune Teller, the Strongman, and the Beastmaster (who also comes with a hound!). Along with these new unusual and intriguing characters Arima's light introduces a 'prequel' game mode where an original cast of characters attempt to lock away the evil magic of Typhaon, the volcanic spirit.

New characters, new game mode, and new hazard tiles to contend with.