Vall foundry - Cant finish map if you kill the boss before killing the rare mobs

If you play vaal foundry and the map has the boss added, be carefull.
If you dont kill all the rare mobs first and you rush to kill the boss, once you kill him, you wont have portals to move upwards.... So, you become the new boss imprisoned in its arena. You can go down with the elevator but not up.

Waiting other exilte to fullfill my loneliness.