Plan this map around two separate goals: learning enough of the space to survive, then deciding whether the attempt is for Snowfella or escape progress. Keeping those goals separate prevents a generic boss tip from being mistaken for an objective trigger.
Snowfella is a named official encounter and community material describes multiple phases, but the current evidence does not support a precise phase table. Watch for the game's visible attack and objective signals, preserve a recovery route, and use the boss hub for the evidence boundary rather than relying on an invented health threshold.
The escape objective is also official. This page does not promise a completion reward or a fixed sequence. If the current game presents a different prompt than an older guide, prefer the live prompt and record the mismatch for correction. That is especially important after the selected 2.1.0 update context.