i just have a few perks left to fully upgrade level3, today i start playin and my retriever is at 0 but every other perk that i had upgraded are fine. i know some people experience points or stats would go back to 0 sometimes but just 1 perk? i'm not askin for a way to get it back but i want to know if it happen a lot. by the way to all the people who only play with the best perks and think every other ones are bull**** take the time to upgrade them all you'll discover great attributes and develop different game style, the key in crysis is to be versatile. after a few rounds good players will know where to find you and how to get you. adapt yourself to the people playing against you, if needed many times in a game.

I've had retriever set back to zero 3 times now. Not sure why but a few friends have had the same thing happen. Only retriever for me but others had all reset too. So yeah somewhat normal.