Here is the full list of all 28 Taxi Chaos achievements.
Unlock the TXI 4R
Unlock all vehicles
Survive Pro Mode for 3 minutes, or longer
Complete El’iot T’yler's quest line
Complete Jacques Mouse's quest line
Drive a total of 100 miles
Complete Mr. Marino's quest line
Complete Risa López's quest line
Play for one hour as Vinny
Complete Nikki Stix's quest line
Unlock the Generic Motors B10
In Pro Mode, earn a 3 star rating or higher
In Pro Mode, earn a 5 star rating
Complete Emma Ventour's quest line
Play for one hour as Cleo
Reach the highest point in the map
Complete José Rodríguez's quest line
Unlock the Yakan Type S
Complete Sandy Miller's quest line
Complete Jerry Jones' quest line
Complete the Xtreem Mascots quest line
In Arcade Mode, earn a 5 star rating or higher
Unlock the Va Veloce
In Arcade Mode, earn a 3 star rating or higher
Unlock Pro Mode
Drop off 20 customers in a single run
Drop off 100 customers
Drop off 11 customers in a single run