The highest HP + DEF monster in the dungeon is the wood ogre with 117,133. That means you need 40 ATK +eggs on a uevo ROdin to guarantee a pure push button kill no matter what is randomly spawned ((2143 + 5x) * 50 = 117, 113, x = 39.852). However, for those that don’t have the ATK eggs to spare, ATK latents are an alternative especially now that they’re relatively easy to acquire through PreDRA Infestation.
This table doesn’t address possible rounding issues, but I’d assume rounding up is fairly safe. Please let me know if any of the numbers end up being wrong.
As I have plans for Saturday, I may miss the debut of this dungeon. A bit unfortunate for sure as I really want the +eggs (the lack of 10x sucks).