It will take ‘something like 100 hours’ to completely unlock an entire kit in Battlefield 3 report bf3blog,. The number was confirmed by senior gameplay designer Alan Kertz on twitter this weekend. Responding to gamer 450bq’s question “How long would it take on average to complete a kit?”, Kertz replied “If you unlock every weapon, every gadget, and every unlock for every weapon… something like 100 hours.”This is great news. It Didn't that long to unlock a complete class If you played a couple hours in BF:BC2 every day.
DICE are clearly aiming for longevity in their unlock system, and we’ll be able to see how well that philosophy holds up when Battlefield 3 is released on October 25th.