With great power comes great responsibility.

In game terms: The responsibility not to injure yourself, mainly.

Transcript

Luke: {wielding a laser sword} This sounds psychotically dangerous.
[SFX]: Whmmmmm...
Han: Nah, it's easy. I've had plenty of characters with laser swords!
Obi-Wan: Even as a trained Jedi, you must respect the danger of the weapon.
R2-D2: Yeah, it's like carrying a shark.
C-3PO: Tied to a bear!
Obi-Wan: You must possess the lightning reflexes and judgement of a Jedi.
Han: Kyle Katarn didn't need Jedi judgement.
R2-D2: And what was the very first thing he did when he got his hands on a laser sword? Cut his own hand off.
Han: That never stopped Anakin.
R2-D2: Anakin was a Jedi! Kyle was no Jedi. He was just a guy with a laser sword and a few questions!
C-3PO: Like: "What happened to my hand?"