Can enyone help or suggest a cheats? I have try dnkroz and dncornholio but they dno't work.
Is any way to save the game progress?
Tanks

I will never forget those cheats I used back in the day: DNSTUFF (gives all weapons and objects) and DNCASHMAN (you throw money when pressing the action button)

Here are all the cheats for the Atomic Edition.
Note that you can't enter cheats when using the Damn I'm Good difficulty level; to get around this you can start a game in a different difficulty level and enter the cheats you want, then start a new game on Damn I'm Good. This only works for permanent cheats (such as God mode). Unless the Atomic Edition fixes this (I haven't tried this in years), you should then be able to play Damn I'm Good with the cheats you used.
To save, simply hit Esc and go to Save. Choose a slot, hit Enter, type whatever you want to call it, and hit Enter again. When you die the game will offer to load your last save.

Thanks to Arkose for the suggestions, but the game don't accept the cheats code. I have try with the original from GOG and with eDuke32 . Is any one have the same problem?

keep trying.
dnstuff definetly works.
maybe you type to fast or slow

Keep also in mind that in QWERTY keyboard layouts, the cheats are DNKROW & DNCQSH,QN.