Ronia is indeed annoying, but she can take a while to kill you too if you heal properly (and have Uriel!). She spawns lots of red orbs too, so you can try hitting her without skills. If it works, good, you take about 45-50% of her health (do not make more than a row, because you risk getting her below 30%), if it does not go on until you get a good board and/or have to GTFO. Minerva, don't forget you can just stall her 5 shield. I don't see how having Stratios+Defoud leaves you naked for Kali (assuming you do not screw up)? Stratios is somewhat stallable, ACC barely needs to stall 1-2 turns and the haste will then bring back all the rest. I usually do not use my heartmaker after 15 because if I blow through all the other floors, he has to be up on Kali. Also not using Antares after 15 most of the time (anyways, too many pre empt to not clear every floor at full HP). So you should have about 1 skill/floor left if you dont stall and then heartmaker+heartbreaker for Kali kill.