Out of the Dark

It’s an XV Thermo puzzle, except you can’t see it all at once. You can see just enough to fill in one cell, after which you’ll be able to see more.

This is the second of four puzzles exploring a guided solve path using Fog of War.

Rules:
Normal Sudoku rules apply.
Digits on thermometers strictly increase from bulb to tip.
Digits in cells separated by an X sum to 10. Digits in cells separated by a V sum to 5. Not all X or V clues are given.
Correct digits reveal the cells surrounding them, up to eight.

Estimated difficulty: 1 out of 5