Hey, the trick to kill that boss is to pin it down with harpoons and place disruptors in places where he's stunned. I guess you know about the damage transfer mechanic of the harpoons. MichaelChandra made an optimal layout which looks like this https://i.imgur.com/wrAQKjn.png or superminimalistic as he calls it. :D (spoiler tho)
I made this comment for another player which also struggled on level 15. Hope I am not too late with the reply. :')
 "Spacedust Defender"){kind=icon}
Hey, the trick to kill that boss is to pin it down with harpoons and place disruptors in places where he's stunned. I guess you know about the damage transfer mechanic of the harpoons. MichaelChandra made an optimal layout which looks like this https://i.imgur.com/wrAQKjn.png or superminimalistic as he calls it. :D (spoiler tho) I made this comment for another player which also struggled on level 15. Hope I am not too late with the reply. :')