Okay, I beat the regular game in 4 star difficulty because 5 star wasn't unlocked until Challenge Mode. I then just beat every Challenge in 5 Star difficulty and now decided to start a 3rd Challenge Mode to get the skill points, so I set the game on one star, which is obviously the easiest level. Anyway, I just started and am on Catacrom Four. I am missing one skill point on that planet, Lights Out, can cannot figure out how to get it. It is the one where you have to use the EMP pulse on three turrets. The trouble is I cannot find a challenge on that planet where you are on foot and can even FIND three turrets with shields to use the EMP pulse against.

Any idea what gives? I went through all the challenges twice just now and cannot find a level with three turrets on it.

Heh, my reaction to a similar situation would usually be to 'complete' it with Codebreaker or something.
I dunno, good question. Maybe the levels are slightly different in each difficulty mode?
I'll see what I can find.

Yeah, I went through the levels on that planet several times and could not find any challenge that even had 3 turrets.

Well I haven't played the game in quite a long time so this may not be right. But anyway, I think you have to use the EMP on the three stalker turrets in the optional challenge Destruction Derby. I don't think you can get out of the Landstalker but you can use the EMP on the turrets. So, you should be able to get the skill point. Hoped it helped and good luck!

Hmmm Okay, I didn't even think of that. I forgot my attack bots follow me on some of the Landstalker challenges. I will try that tonight whem I go home.

I got it on the challenge called Demolition Derby while using the EMP pulse. I forgot that there were so many turrets in that challenge!