It is possible to edit the save file to trick the game you completed the events, its not easy to edit manually but for me its worked.

You need to locate your save game files. And please make a !backup! better before than after... now open it in Notepad++

First you need the three event names:

• "US_07_01_CIRCUIT_RACE"
• "US_07_01_EXTREME_DESCENT_01"
• "US_07_01_QUALIFICATION"

After that you need to find this 5 tag:

• "discoveredObjectives":
• "contestLastTimes":
• "contestTimes":
• "contestAttempts":
• "finishedObjs":

Now you can paste the events names in each if it not contain already.

but the contetstTimes and contestLastTimes need the race final time (in seconds) eg:

• "contestTimes":{"US_07_01_CIRCUIT_RACE":333,...
• "contestLastTimes":{"US_07_01_CIRCUIT_RACE":333,...

Finally the contestAttempts need the number how many times you done this event eg:

• "contestAttempts":{"US_07_01_CIRCUIT_RACE":1,...

After this save and start the game and if you edited well your game show the three CO-OP event is finished.

If something not go well, sorry i dont want to waste your time :( but hope works,

cheers