Here is the full list of all 14 Caravan achievements.
Finish Chapter 1
Finish Chapter 2
Finish Chapter 3
Finish Chapter 4
Finish Chapter 5
Have at least 6 dromedaries in your caravan.
Have at least 6 horses in your caravan.
Have a Trader, Rogue, Sage, Scout and Mercenary, each female, while carrying 5 spices.
Own 2 animals of each kind.
Have 3 male heroes, while carrying gold, myrrh and frankincense.
Have one hero of each profession in your caravan.
Carry at least 20 items while not being overburdened.
Have three heroes of the same profession in your caravan.
Finish the Tutorial