I just did my completion run. I used an r4 ascended aegon for Aarkus and an r4 doom for Airwalker.Aegon for Aarkus wasn’t too bad. Used a few revives but not an excessive amount. I didn’t do a good job tracking how many. I was fairly ramped up but still not fully ramped after the Aarkus fight. Aarkus was fairly aggressive and threw specials pretty often. You have to be careful and cut combos off short to not push him to close to 3 bars. The power gain isn’t as bad as I was worried it would be.Doom for Airwalker wasn’t bad either. I used a couple revives but I think the added power rate of an r5 would have made it easier. The Heimdall synergy was also nice the one time I failed to knock him down in time and he threw an Sp3 when I still had most of my health.