The idea behind the Tower is that people DO get info on the trials. However MOST of the new players don't know anyone there. For the secret keys, etc. The player needs to beat the previous record of completing all 10 floors, so most Guilds don't even bother with it since the newbie's are not going to be able to do it. The previous party that cleared it was the MC brother's which was the strongest for a long while.
Kinda don't like how some important world-building info is left out tbh