With a recent update, LH have overhauld thr tower gamemode.
Difficulty now scales up every 5th floor (floor 6, 11, 16, 21, 26, 31) where then at room 31 a 2 minute timer is added, where after 2 minutes damage is dealt to the player no mater the state of the hero untill either the player completes the floor or dies. After floor 31 difficulty increases dramatically.
The tower now also maxes out at floor 50, but this shouldn’t be an issue for most players, as only the strongest players will be able to get that far, it does result in grandmaster leaderboards being a race to floor 50 though.
Every tower run rewards the player with 50 tower points, and once per day after completing a tower run you can open the tower chest to recieve somewhere between 50-100 tower points, and either a keepsakes key or some rings.
Points earnings from placement on the leaderboards has also been increased, making unlocking tower heroes and staring them up much more feasible.