Crazy Taxi

Has to be done in Arcade mode.
The License achievements do not stack, you have to get an S, A, B and C rank on seperate attempts.
The licenses are split by the money you make

S = $5000+
A = $4000-4999
B = $3000-3999
C = $2000-2999

To make this even easier you can go into settings and increase your starting time and lower the traffic difficulty and this won't affect the achievements

This achievment is tricky because it comes with so many conditions, it's not actually that hard.

To do this you have to select Arcade.

But it does not matter what length of game you select. I recommend a 10 minute game and once you have reached your target stop.

The achievment is not stackable. It you get an S licence on your first go you will not get the achievments for getting an A, B or C licence. So you will have to play this at least 4 times.

Just to make sure you don't screw up in the last second because a car got in your way to make this a cake walk from the main menu go to 'Help & Options' then to 'Settings' Then change the Time and Traffic difficulty all the way down and you will breeze through this.

To see what you need here are the scores required:

S - $5000 >
A - $4000 > 4999
B - $3000 > 3999
C - $2000 > 2999

You have to do this in Arcade Mode, NOT Original Mode.
The licenses do NOT stack, so you have to get these on separate occasions. Just do a 5 minute round for C, B and A. And a 10 minute round for S. Be careful when going for the S license. If you earn over 10,000 you will get a higher rank than S. In that case, you will NOT get the S license achievement.

Class C License - $2000.00 to $2999.99
Class B License - $3000.00 to $3999.99
Class A License - $4000.00 to $4999.99
Class S License - $5000.00 to $9,999.99