F1 2011
31 Achievements
34-42h
PSVITA
CHALLENGER
COMPLETE A CHALLENGE WITH A C RANK OR ABOVE
32.4%
How to unlock the CHALLENGER achievement in F1 2011 - Definitive Guide
neahcrow
On each challenge you can receive a grade as low as an "E" to an "A 3 stars". The first time you receive a "C" ranking this will unlock. You will get it as you work towards CHAMPION.