Combat knife

The Combat knife is a weapon in Deus ex, and Deus Ex: Invisible War. With a high "low-tech weapons" skill it can kill in a single blow if you hit an enemy in the back of the head without being seen. Be aware that this is not a silent kill. Otherwise it is often considered to be the worst weapon in the game, having the lowest damage of any melee weapon and being useless for non-lethal takedowns. It can be useful as a crowbar replacement, however, as it inflicts the same amount of damage to crates but takes up half the space.

In-game Description
Deus Ex Description: "An ultra-high carbon stainless steel knife."

Deus Ex: Invisible War Description "A heavy military knife. Ultra high carbon steel. Virtually unbreakable. Heft and balance make it suitable for slashing and stabbing."

Unique weapons
In Deus Ex: Invisible War, There is a unique variant of a standard combat knife: the Toxin Blade:

"Prototype special forces combat knife. Microporous metal releases toxins on contact. Designed for political assassination"

Hitting an organic target with it will cause them to convulse briefly and die silently. This weapon was later ported to the first game in Shifter, where it can be found in a barge filled with toxic gas in Hong Kong.

Nóż bojowy (DX) Nóż bojowy (DXIW)