It took me a few months but I finally completed all 71 races of the Assetto Corsa challenges at the alien level. It was fun to do and I can recommend it to anyone. It will force you to drive cars and tracks that you otherwise won't drive often or even at all and that will make you a more complete driver. Also, if you try to win the races against the highest AI levels, you have to modify the default setups and that way you can learn a few things.
For anyone who would like to win the races at the highest AI levels I have a few tips:
- Make sure you nail the start. The races are short and if you don't have a good start, you might run out of laps to make it to first. Make sure you have just enough wheelspin to keep the revs up. For some cars you have to use the clutch. Don't hesitate to restart the race if you didn't nail the start.
- For cars with ABS, use it and set brake power to 100%. I used to set ABS to off and theshold brake, but I noticed that you can often brake a lot later when using ABS and brake power on 100. (Heusinkveld Sprint user here).
- The setups I used to win at alien level often did not differ a lot from the default setup, so if you make changes, change one thing at a time and do it in little steps. Experience the behaviour of the car first before you make any changes to the setup!
- Always use the softest tire compound (except for the F1 cars and 10 lap LMP races I believe). After compound the single most important setup parameter (and that was new for me) is tire pressure. Tire pressure is more important than tire temperature as long as the tires don't overheat (cold tires is not so much a problem). The optimal tire pressure is the one that has the best trade off between grip level and rolling resistance. For cars that have limited setup possibilities, you can use tire pressure to change the balance of the car (front lower pressures for more oversteer). If a track has way more corners to the right than to the left, you could increase pressures on the right side of the car to lower the rolling resistance and thus increase the speed of the car, without sacrificing a lot of corner speed.
Let me know if you have any difficulties with a particular race. Maybe I can help you. Have fun!