This solution expands on the correct information provided by Darth Hawk CZYou can miss this achievement as early as your third Event (race).
If you have already got Points from an additional Event then they only way to get this achievement is to delete your save and start again. If you have already unlocked Stage (tour) 10, it may be better to get all the other achievements before deleting your save, or move your save to another drive and move it back once you have this achievement.
The achievement description is a little misleading, as it is impossible to complete World Tour Mode in anything less than 42 events, so you really can't mess
about. Completing the World Tour Mode requires you to get 112 Points in Stage 10 by coming 1st in all 7 Events. First you need to unlock Stage 10, by scoring Points in 35 earlier Events. For the first 6 Stages you can choose between Race, Sprint or Freestyle Events, so pick the ones you find easier. Stages 2, 6 and 10 are the hardest, because you have to come 1st in each Event.
The Points you get are based on the position you finish the Event:
1st = 16 Points
2nd = 15 Points
3rd = 14 Points
4th = 13 Points
5th = 12 Points
6th = 11 Points
7th = 10 Points
8th = 9 Points
9th = 8 Points
10th = 7 Points
11th = 6 Points
12th = 5 Points
13th = 4 Points
14th = 3 Points
15th = 2 Points
16th = 1 Point
You can replay any Event to improve your Points.
These are the Points you need to unlock each Stage:
Complete Qualification to unlock Stage 1 (Maxis - Class D)
28/32 Points (average 3rd in 2/4 Events) to unlock Stage 2 (Bomb Squad - Class D)
32/32 Points (1st in 2/4 Events) to unlock Stage 3 (FRP Air Masters - Class C)
38/48 Points (average 4th in 3/4 Events) to unlock Stage 4 (Fox Racing Shox - Class C)
44/48 Points (average 2nd in 3/4 Events) to unlock Stage 5 (Truman - Class C)
60/64 Points (average 2nd in 4/5 Events) to unlock Stage 6 (Schorr Racing - Class B)
64/64 Points (1st in 4/5 Events) to unlock Stage 7 (ITP - Class B)
68/80 Points (average 3rd in 5/5 Events) to unlock Stage 8 (Elka Suspension - Class B)
86/96 Points (average 2nd in 6/6 Events) to unlock Stage 9 (D4 Sky - Class A)
92/96 Points (average 1st in 6/6 Events) to unlock Stage 10 (Lonestar Racing - Class A)
112/122 Points (1st in 7/7 Events) to Complete the Pure Tour
You will unlock all the Main Storyline achievements along the way:
The 1 of a kind achievement in Pure worth 5 pointsBuild an ATV from scratch in the garage.
You must not attempt any of these achievements until you have this achievement: