Puzzlerium Tour: Castle Wall

  

Puz.link

Rules: Draw lines through orthogonally adjacent cells to form a loop.

1. Lines cannot go through bold borders.

2. White cells must be inside the loop, and black cells must be outside the loop. Grey cells are either black or white.

3. A number with an arrow indicates the number of line segments in that direction. Vertical arrows only count vertical lines, and horizontal arrows count horizontal lines.