Yes yes yes yes. It is exactly like you said.
Could not find any in those link. If only I could know the name of the game...
More info I can think of.
-All levels were randomly constructed, like the map of Diablo.
-No music. Only sound effect
-The game was sci-fi RPG. No magic whatsoever.
-There was an enemy robot named "sentinel".
-The first level was full of bats.
-The game was turn-based, but enemy can hit twice if it is much faster.
-The early levels had a fearsome enemy name "red fang" (or --- fang I could not remember) It had a poisonous attack. The character will die instantly if after defeating it and eat it.
- There were many types of guns, i.e., pistol, big pistol, laser gun, or even a laser rifle.
- The deeper level had a poisonous swamp. Need a "bio suit" to walk without harm.
Thanks a million for anyone's help.