Marines should have gotten a "Trophy Kill" system

[Marauder Zim]

I think it would hurt them but Not as much as other trophy kills since their acid blood will burn it.

[Chris!(($$))!]

If you ask me, Marines are lucky they didn't get a Trophy Kill, Stealth Kill option.
I mean in MP alone Trophy Killing or Stealth Killing usually ends up in a three way Tropgy or Stealth kill fest. And in SP I don't think it would really make sense because you are supposed to be the terrorized little Marine against the big mean monsters, though a special kill animation or QTE might have been cool for Marine Boss fights.

[cpl dwayne hicks]

well while it could be cool i think it wouldn't work well because they use long range weapons

[Marauder Zim]

I wish but its sad that the knife searved no purpose