I only included area in genocide killing, you don’t kill any enemies besides bosses in new home, and you don’t even go into the true lab in genocide. Also, why did you asked the same quesion twice?
GUYS I HAVE A THEORY; AND LASTLY, HOTLAND IS OF COURSE SUMMER; FIRST, YOU FALL AND RUINS HAVE FALLING LEAVES, WCHICH REPRESENTS THE THIRD SEASON (FALL/AUTUMN); THE YOU GO TO SNOWDIN WCHICH OBVIOUSLY REPRESENTS WINTER; THEN, WATERFALL REPRESENTS SPRING, BECAUSE OF THE FLOWERS AND RAIN