I got my hands on this case.
ARGB connections is pretty simple with two possible solutions.Either you connect the included controller through SATA and control the lighting from the case or you can go with a ARGB 3 to 1 splitter cable and connect the fans to the motherboard.
For PWM power, you'll almost definitely going to need at least one extension 4pin cable and depending on the motherboard, probably a splitter cable or just a fan hub.
Phanteks didn't use proprietary weird cables.Everything was standard.
Posting this in case someone comes here with the same questions i had...Maybe it can help them, since the manual is laughable for a 150€ case.
I had a 70€ case from CoolerMaster with better manual than this.