Options to choose on combat and few more ideas

[odrosu]

Incapacitate to capture enemies
Sleeping gas
Tranquilizer bullet
and chlorine gas like in ww1

[Deer87]

since clorine gas turns into hydrochloric acid when in contact with water (like when touching the inside of your airpipe and lungs or your eyes) it would be a poor choice for "knock out gas" unless you have a spare set of lungs and eyes handy.

[Limdood]

nonlethal combat has already been suggested ad nauseum already as well...there are dozens of threads that you could contribute to instead of making another one about this.

[odrosu]

oh, i forgot to add sleeping gas, but to be honest, I'm having a problem with berserking psychology or something, so I want to incapacitate them if possible any weapons that you can recommend?

[Barley]

since clorine gas turns into hydrochloric acid when in contact with water (like when touching the inside of your airpipe and lungs or your eyes) it would be a poor choice for "knock out gas" unless you have a spare set of lungs and eyes handy.

In Rimworld you just might!