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