In this context, and as a heuristic rather than a defining feature. Most systems of deontological ethics I've ever heard of don't allow for lying in self-defense; it's possible in principle to come up with one that does, but I've never seen a well-defined one in the wild.
I was really looking more at the structure of your comment than at the specific example of self-defense, though: you described some examples of dishonesty aimed at minimizing harm and contrasted them with unambiguously negative-sum examples, which is a style of argument I associate (pretty strongly) with a pragmatic/consequential approach to ethics. My mistake if that's a bad assumption.
Most systems of deontological ethics I've ever heard of don't allow for lying in self-defense
It's no different in principle from killing in self defense. If these systems don't allow lying in self defense, then they must not allow self defense at all, because lying in self defense is a trivial application of the general right to self defense.
Anyway, the fact that my point triggered a memory in you of a consequentialist versus deontological dispute does not change my point. If we delete everything you said about deontologists versus consequentialists, have you actually said something to deflect my point?
In secret, an unemployed man with poor job prospects uses his savings to buy a large term life insurance policy, and designates a charity as the beneficiary. Two years after the policy is purchased, it will pay out in the event of suicide. The man waits the required two years, and then kills himself, much to the dismay of his surviving relatives. The charity receives the money and saves the lives of many people who would otherwise have died.
Are the actions of this man admirable or shameful?