I have a couple personal counters for akimboes:
1) The toob class (tube, thumper, claymore, scavenger, danger close) as it will always take them out one shot. The claymore can sometimes catch them, but more often than not I just use it as a warning that they are coming up behind me. Set up close to it, but not too close. You can also set up two to give you even more recon info.
2) Any long range class: Sniper, LMG, M16/FAMAS, etc. Find yourself a nice long hallway or open stretch of ground and just watch for movement. If there are a lot of runners on the other team, avoid close quarters, as you are pretty much guaranteed to lose. Just change up your strategy and you should do fine.