People are saying the rifts have special meanings lie the cubes in season 8 chapter 2, where blue rift - stable, red rift - unstable, purple rift - corrupted, and gold rift - special/unknown
Severe lag in your future. Spires have killed me so often due to lag issues. I had to refill a chest with Tome of Return in Survival mode. Only good news is Bears are easy to kill with two quad charmed corrupted pistols Spire/Damage/Zapping/Luck