Killing floor means "Matar piso" in spanish D:

and in italian means "Piano delle Uccisioni"

In polish means "Zabójcza podłoga".

"Gyilkoló Padló" in hungarian

In Italian "Uccidendo il pavimento"

"Étage de la tuerie" in French

In racist asian it's "Kirring Froor"

in english is killing floor...

In Bahasa Indonesia = Sedang Membunuh Lantai

Öldürme zemini

Only means that if you translate literally, word by words, but all together means something else. Latin languages are too complex compared to English.

You're translating too literally, in Spanish should be: "Piso Asesino" or "Piso de los Asesinatos". Both should be correct, meaning "A floor (place, not ground) where kills occur/happen".

Nah, it means "Piso asesino" or "Piso del asesinato" but it works as "matadero"
Also it is a really good game.

English puts the adjective first, spanish doesn't. Killing floor it's not "matar piso" but "piso de matanza", being "matanza" (killing), the adjective. Anyway, we don't have an exact translation for what "killing floor" means in the game's context.

No se como se hace para matar un piso.

For me it's this

http://www.youtube.com/watch?v=EGIE28q3fEA

No it doesn't you've done a poor translation.