Kang has multiple attacks and pulse wave... does this mean he can do 2 pulse wave attacks, each doing a click of damage? If a figure with pulse wave has a friendly next to them with enhance - does that make the pulse wave do 2 clix?

Pulse Wave uses its own special targetting.
Pulse Wave will ignore the Multiple Ranged target icons (lightning bolt icons).

Only one Pulse Wave can be done per action.

So, no, a figure with Pulse Wave and more than one lightning bolt icon can only do one Pulse Wave.

Yes, except that the Enhancement will only affect opposing figures. Friendly figures in the Pulse Wave would only take 1 damage.

Much obliged Tsannik. I think this is the second or third time you've posted to answer my rules questions and it is very much appreciated. I didn't think pulse-wave and multiple attacks would work, but could you quote the rules or Q&A that clarifies why enhancement would only add pulse-wave damage to enemy figures maybe?

From the PAC:

Maybe one day there will be a big figure with pulse wave. Since those get two attacks, that would be the only way we'd see two pulse wave attacks in a single action.

awesome. Thanks so much Tsannik. You rock. Next time you can just tell me 'it's in the power description moron.' Thanks again.