We're Back To A Snowy Setting
Since Lost Planet 3 is set before certain events in the series, the planet's surface hasn't yet been stripped of its arctic climate, and the game's environments are wracked with violent blizzards and covered in rock-solid ice.
This is a huge departure, especially from the second game, which put a tropical spin on E.D.N. III. Trudging through the jungle was great, but I was honestly glad to get back to the snow in Lost Planet 3.