Logic Masters Deutschland e.V.

This puzzle was made for Scojo's "Little Killer" prompt. I couldn't make anything that I found interesting with normal little killers so I crossed little killers with X-sums and found something neat to build a puzzle around. Please leave a comment if you enjoy it! RULES:

Normal Sudoku Rules Apply

Lil Killer X: Arrows outside the grid indicate the start of a laser that travels through the corners of cells and might bounce at a 90 degree angle off of the grid borders. The value by the arrow indicates the total sum of the digits visited by the laser. The laser travels along X diagonals, where X is the first digit seen by the laser (that is, it bounces X-1 times). For example, if r9c6=2, then 76 is the sum of all the digits between r9c6 and r6c9 plus the sum of all the digits between r5c9 and r1c5.