Here is the full list of all 20 Road Trip USA 2: West Collector's Edition achievements.
Find 500 items
Find 1,000 items
Find 1,500 items
Find 2,000 items
Finish in under 2 minutes
Get 100% accuracy
Find 5 shields
Find 50 shields
Find 100 shields
Find 150 shields
Find 20 robots
Find 40 robots
Find 60 robots
Score over 1 million
Score over 5 million
Score over 10 million
Score over 20 million
Find 30 "Ninja" cats
Find 30 "Bear" cats
Find 30 "Max" cats