This level is not that hard to complete, but can be a bit hard to understand from first sight.
Here you have to gather your party and then get to portal at top left of level. Level itself is built like 3 floor building or dungeon. Red, green and blue (RGB for short) maps represent floors and colored portals represent elevators. So if you step into R portal on B or G level you will go to R level, if you already are on R level nothing happens, you stay on R level. Same with other coloures.
And Wormhole modulator can change colour of portals, so you can choose "floors" where "elevators" move your party.
Rest is simple. Navigate your way to your party and then to exit. Combined level map will help to see route.