Hey! Thank you so much for playing! :D
It depends, the general tip is to have Alexis' Combat OR Intelligence fairly high (40-ish) and the Princes' Magics 40-ish as well! Serin with Light & Wood, Nazir with Fire & Wind, Aurelius with Water & Darkness.
Also, make sure to refresh your build since our first release had a bug where you almost can't survive that scene xD Our newest build is from about 2-3 hours ago! You can continue with a Savegame anywhere before Week 11 :D