Quick Answer
Guildrun Floor 50 was a real high-end Endless benchmark in older official notes, but it should be treated as an extreme deep-Endless goal in the current demo. Official material says older top builds were reaching scores in the 50s, 60s, and 70s, then later patches made floors 20 to 30 harder and nerfed some top-end engines. Do not assume an old Floor 50 build is still normal or current.
Is Floor 50 Possible?
The collected official update material says older leaderboard scores included very deep Endless results. That proves Floor 50 is a real search intent, not a fake community myth. However, the same material explains that Endless scaling was deliberately changed afterward.
For the current demo, the careful wording is: Floor 50 is possible historically and may still be possible with the right current build, but it is not a normal beginner or midgame target. Exact current success rates are 待确认. Any page promising an easy Floor 50 route would be inventing certainty.
Why It Is Hard Now
Official notes say floors 20 to 30 became harder after public demo balance changes. Follow-up patches also targeted old deep-Endless builds, including Rush and Stall patterns that were outperforming. This means Floor 50 requires patch-aware planning.
The danger is not only enemy health or damage. Deep Endless also punishes weak opening survival, bad positioning, static scaling, and old assumptions about triggers or relics. A build can look strong through early floors and still collapse once scaling pressure rises.
What a Floor 50 Build Needs
First, it needs repeatable or permanent scaling. Rush, Stall, Shard generation, Crit, and permanent stat growth are all supported directions in the material. Static bonuses are not enough if they stop adding value.
Second, it needs a frontline that survives the opening burst. Skorn, Kai, Pimenta, and other tank options appear in related sources, but exact choice depends on support. Third, it needs a damage source that keeps scaling, because survival alone only delays the loss.
Floor 30 to Floor 50
The material suggests deep floors become a test of clean engines, not broad rosters. You need a core that explains every slot. If a hero, relic, or item does not help survival, scaling, damage, or positioning, it may be too expensive to keep.
Old Floor 50 examples are still useful for learning principles. Use them to understand why repeatable scaling, tank survival, and positioning mattered. Do not copy old values without checking patch notes.