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