The Megacorp Add-on for Stellaris: Console Edition (JP) has 6 trophies - 4 bronze, 1 silver and 1 gold.
As a Corporate empire, have a branch office on 5 different empires' capitals.
I won the Galatron and all I got was this lousy achievement.
Build a Mega-Art Installation in a nebula system
Build a Matter Decompressor
Build a Strategic Coordination Center
Build an Interstellar Assembly