The protagonist lacks any direct method to protect themselves, mainly the lack of any capability to fight off anything that attacks them. This forces player to run away or otherwise evade enemies rather than fight them.
The first video game about Defenseless was released in 1982.
* Unarmed fighting - if your fists are enough to defend yourself and beat your opponents, you aren't defenseless.
* Environmental combat
* No combat
Combining with any of the weapon or other offensive method tags should signify this is not absolute state.