First Base Need Help Re: Power Core

[WoodMan]

Hey guys, I'm playing my first game of Xenonauts (Normal/Ironman) and I'm in my first alien base. Things aren't going that well. I lost 3 soldiers and my scout vehicle!

So I figured I want to retreat, but I don't understand the rules of this kind of mission. First of all, how do I abandon and get my remaining guys out? Where do I have to go?

Second, do I have to destroy the powercore first? I found what I believe to be the powercore (I had to watch a video on YouTube to confirm this). On the video the player throws a nade on the powercore and it blows up leaving no remains.

-I threw an Alenium grenade on it. No effect.
-I threw a second Alenium grenade on it... still no effect.
-I shot it with a laser, it looks damaged now.
-Shot it with a second laser... No effect.
-Shot it with the LMG. BOOM, Big explosion and fire in the room... but the darn thing is still standing, just looking very worse for wear. Is it destroyed now? Or do I have to hit it again? I just wanna get outta here, lol.

No tooltips or anything have come up to say it is destroyed. I can't tell! How do I end this mission?

[Solver]

To abort the mission, go back to the first room where you started, and where you could deploy your soldiers at the start of the mission.

I am fairly sure that the core has been blown up if it has exploded and filled the room with smoke. It is now rather obviously incapable of powering anything - it simply disappearing without a trace is from old versions. By the way, you may want to use C4 for blowing things up, it's far more effective than grenades.