Where he is
The Scarecrow is a Fatal Falls boss who sits in the Mausoleum, an alternate second-boss biome. The route runs through Fractured Shrines into Undying Shores, and the Mausoleum is at the end of it.
The Cultist Outfit gate
The single most common blocker here is not the boss — it is the door. The wiki states that first access to Undying Shores requires wearing the Cultist Outfit. Until you equip it, the door does not open and the route simply stops.
If you are following a guide that says “go to Undying Shores” and the door will not respond, this is why. It is an outfit check, not a progression bug.
Immunities: stun only
The Scarecrow is immune to stun. Freeze, slow and root are not listed as immunities.
That puts him in the middle of the range: far more controllable than the Giant (immune to all five), but you cannot rely on stun the way you can against the Concierge or the Time Keeper, who have no immunities at all.
How the fight is shaped
He is an alternate second boss, so expect the difficulty of a second-tier fight — a full moveset arriving two biomes into a run, with everything scaled up. As with every boss, he skips his first phase once any Boss Cell is active.
Where Fatal Falls fits
It is important not to over-plan around this content: the Fatal Falls biomes are parallel alternatives inside the existing stages, not extra steps tacked onto the end. Taking the Scarecrow route means you are swapping which biome fills stage 5 and which boss fills the second slot — not adding a longer run.
Related guides
- Secret areas — the Cultist Outfit door
- Biome routes
- DLC content overview