How to create a laser that bounces on the walls and hurts players?

Development Programming & Scripting Blueprint
6

I found this simple line trace tutorial on the wiki: A new, community-hosted Unreal Engine Wiki - Announcements - Unreal Engine Forums

But I can’t get it to work, he’s using First Person Template, I’m doing a platformer.

Anyway here’s how it looks:

wrong_reflection.png
wrong_reflection.png970×574 23 KB

The blueprint:

wrong_reflection_blueprint.png
wrong_reflection_blueprint.png1928×1048 218 KB

I don’t understand how I can make something simple as draw a line from my character, to the mouse cursor and continue drawing the line 5000 units further. It’s impossible.

Every time I find a tutorial or something it’s completely different from what I’m doing.
I’ve tried it once before a TopDown prototype where I wanted to draw (yet another) laser, Magicka style.

I just don’t understand.