What were some things the Pilgrims/the first english puritans encountered that were bad when they landed?

Fear of starvation--after a long ship journey and the ship getting off of route, the Puritans were running out of supplies. Upon arrival Puritans needed food and needed to get settled quickly. The first winter was the hardest on the Puritans and many died due to cold and lack of food.

Encounters with Native Americans--though the tribes the Puritans encountered were friendlier than others, they were unknown to Puritans, others than stories and books written by earlier explorers. Violence would be experienced between the two cultures. Much of the violence centered on competition for food and resources.