Here is the full list of all 21 21 Days achievements.
work as a cashier at Shell Gas station
meet the ending of the game
work more for family who arrived here
get the ticket from Lucas
work as a cashier at Restaurant Sylvia
visit Back Street
talk to everyone at least once
do volunteer work ar Refugee School
do carpentry at Factory
work as a server at Restaurant Sylvia
listen what happened to Kareem’s family
survive for 10 days
do gas pumping at Shell Gas station
console the elderly man
pile up Bricks at Factory
visit Shell gas station
understand all conversation
visit Restaurant Sylvia
take a rest in Central Park
eat Halal food
talk to Mahdi