I’d like to know that also. My zerker thief has been yo-yoing up and down for like 30-40 times and it’s 3rd floor that gets me. Only time i’ve made it to the top is when i sumbled to a large zerg. Not that i’m complaining because i support challenges and all but it is beginning to hurt my wallet, i’m poor and 5 silver per yo-yo game times 30 makes a dent in my wallet.
All i’ve learned about the tower is in 3rd floor if you solo and stop to rez someone you’re dead, if you get stunned you’re dead, if you go with a small group to clear the path you will all die thanks to the respawn.
i like the instances tho, but the road to get to them is starting to kitten me off.