Some Challenge are Impossible/ridiculously difficult to complete

Some challenges such as Squad Deathmatch 30 squad revives in a match is ridiculous. The expectation is that each of your teammates dies an average of 10 times and will actually let you revive.  The Score limit is 50. Your team will be getting absolutely demolished if you get 30 revives, assuming you always survive while your team dies. Another problem is the last challenge for the engineer class. It requires you have to repair 6000 vehicle health in a match. That is impossible without cheating or cheesing it. I believe these challenges were not supposed to be done in a single match but across several different matches. These are just the ones I found and their are probably more challenges like this. If you can think of more feel free to comment them.  Please fix this EA.