Tasers are bad. Stun bullets too.

[Admiral jimbob]

The first shot could slow you down (so you'd be easier to hit again), with a chance of causing you to drop stuff in your hands. The second shot could then knock you down.
If you managed to avoid the second shot, you would still getting shakes for some time, which would make you less of an effective fighter. But you wouldn't be out in a single shot.

Not sure about the rest but I really like this idea