What you're overlooking is that in Eastern European countries you can usually buy your way out, it's called corruption or pleasing the state.Not all European countries forbid use of lethal force for self defense. While the Czechs don't have a castle law per se, they do not have a duty to retreat, and defensive use of deadly force is quite often ruled justifiable by the courts.
In Central Europe you are given pre-trial detention before a court hearing, and when you get out you are usually mentally exhausted, even without the help of the guards