[W3EE Redux Next Gen v1.39b] Feet as Cold as Ice - The Grottore

Looks like a bug to me. I'm not actually sure if Flammable oil is supposed to enable enemies to combust all on their own, but in the absence of any other CC options effective against spriggans, this is what I decided to go with. The movement basics are the same as with leshen types.
No need to square off with both the Grottore and the archespore - simply dash past the confused boss and take the fight in his private chambers. While the flora won't follow, that doesn't mean it won't attempt to interfere - whenever possible, always stick to the leftmost wall and try to LoS the main archespore body camping by the entrance to avoid an unexpected gank by the explosive pod spam. Watch out for the little buddy trying to bodyblock.
Chanelling signs doesn't interrupt stamina regen and incidentally wood happens to burn very well, so alt-Igni is a very natural filler for when you've just unleashed a flurry and are forced to recoup.

Superior Flammable oil, Superior Maribor Forest, Apple juice, Corvo Bianco, workbench, grindstone and meditation buffs.
Dire Wolf difficulty, default Redux settings. Stamina mode: Redux - Dynamic. Starting gear, no talents assigned.

0:00 On approach
3:28 Preparation
3:58 The fight
5:33 Cutscene
6:05 Conclusion

Witcher 3 Enhanced Edition Redux:
https://www.nexusmods.com/witcher3/mo...
Geralt's looks (modlist and immersive cam settings in the description):
https://www.nexusmods.com/witcher3/mo...