Why this page exists: A player wants the documented Endless milestone and score history without an invented scaling guide.
The confirmed Week 6 target
Steam's public achievement list defines Lifer as reaching week 6 in Endless Mode. That is the clearest first-party milestone available for a goal-oriented run.
The score-cap note is historical
An older official update says the supported number range was expanded from roughly a 64-bit ceiling to a much larger floating-point range. The same post warned that target scores had not yet been updated at that time.
Because this is historical implementation context, it should not be used as a promise about every current overflow edge case.
No scaling table without a run audit
The reviewed official sources do not publish Endless unlock conditions, weekly target formulas, or a final endpoint. Those remain outside this page until a current build is recorded.