User blog comment:JAlbor/Wikia at E3 2012/@comment-4868246-20120524192324/@comment-1888015-20120524202935

It would be nice to see player generated challenges, as a part of the Virtual Training Program that we saw in ACB.

It could include things such as "Complete (Mission Name) by doing only/without doing this" etc.

This way, you can try and get players to use stealth only, or go in full blazes and not take damage, and the time taken can be put on friends leaderboards.