You have to eat 5 different berries (Different berries, not different color of berries) in a single expedition, you don't have to reach the peak. So you have to find and eat at least 5 from the list below:
- Crispberry (Shore, Tropics. It grows on bushes.)
- Scorchberry (Tropics. It grows on bushes.)
- Kingberry (Tropics. It grows on vines)
- Berrynana (Tropics. It grows on vines)
- Clusterberry (Tropics. It grows on vines)
- Winterberry (Alpine, Mesa. It grows on trees or can be found near capibara lake)
- Prickleberry (Mesa. It grows on cacti)
Be careful as some berries put poison or burn on you. However they still count towards achievment. Look for bushes and vines as berries grow only on them.