You've got further than me. So far, I've only found two of the numbers needed for the safe combination.

I came back to it and got a bit further. I'm now stuck in the treasure room and can't find a way to get out. I only got that far because of all the bugs that allowed me to "cheat". I don't think I'll be able to get any further, so here's my (somewhat verbose) comments so far:

General comments:

The continual press_any_key in every room is very annoying. Why not just print it?
Don't print all the extra blank lines between paragraphs after all the press_any_key prompts, then you won't need the press_any_key all the time.
You can't drop anything anywhere. This is really annoying, especially when you have two fish and it keeps referring to the wrong one. You should use Adventuron's default handling of GET and DROP. Don't do your own thing, except in those circumstances where you need to test something first, or override the default behaviour.
There are lots of descriptions that imply you should be able to do something, but when you try to do those things, they are never understand, e.g. BREAK, CUT, CHOP, CLEAN, COOK, DIVE, HIT, RUB, SHARPEN, STAB, START, SWIM, TICKLE and so on.

Dark Cave:
Add ENTER, PRESS and TYPE as synonyms for DIAL, as you don't dial a number pad.

Living Room:
GLASS and WATER should generally be used as synonyms for the glass of water. For example, X GLASS doesn't work, but X WATER does.
You can't DRINK WATER.

Kitchen:
USE FLASHLIGHT: "You shine the flashlight in the hole..." Hole? What hole? You never mentioned a hole!

Beautiful Lake:
If you have both fish (plain and neon), X FISH describes the plain fish and the fish in the lake, but not the neon one, even if you X NEON FISH.
GO LAKE describes the lake.
There is no response for ENTER LAKE, DIVE, PADDLE, SWIM, DRINK WATER or anything else that you would expect to try at a lake.
USE SPEAR asks "What do you want to use the spear for?" CATCH FISH says "You use the spear to catch a fish. You really tried to catch something, but you didn't." So, did I catch a fish or not? It's hard to tell because I already had the fish. When I tried this a second time, I caught a neon fish, even though I already had it in my inventory. Now (at long last - see below), I could place the neon fish that I already had on the pedestal at the closed cave.

Closed Cave:
"pedastal" should be "pedestal" (many instances of this).
PLACE FISH: "in the pedastal" should be "on the pedestal".
When you place a fish on the pedestal, it says you place the fish in the pedestal (without telling you which fish), but nothing happens. The fish is not dropped and is still in your inventory. So, did you put the fish on the pedestal or not? I've tried this with both fish.
When you EXAMINE ROCKS, you get told there's a jagged one there, even after you've taken it. You can get it repeatedly.
When you GET ALL, it says "There's no spear here." Spear? What spear? As a result of this, and some trial and error, I discovered that you can USE ROCK to carve a spear and the rock disappears. You shouldn't use USE as a verb and the rock shouldn't have disappeared. Try commands like SHARPEN STICK, CARVE STICK or MAKE SPEAR. Even then, they'd be pretty hard to guess without a hint.

Forest:
When you GET APPLE, it says you take a low-hanging one, but it's not added to your inventory. It also says "Too bad your meal is already cold...", but your inventory says you've got "A Nice Warm Meal". You can GET APPLE over and over again, but nothing changes.
When you CLIMB TREE, the location description and image don't change, but you're apparently up a tree. If you CLIMB tree again to climb down, you climb up again. You need to CLIMB DOWN to get out of the tree.
When you GET BRANCH, a stick is added to your inventory, but the room description still says there's a branch stuck in the tree. You can GET STICK over and over again.

Treasure Room:
Oh my god. What did I do to deserve this? I'm in a room full of treasure and there's nothing to examine. However, GET ALL gets a key, an "It's the crowbar" and the "key for a treasure chest". What the?
There's an image of a door, so I X DOOR and get told "The single wooden door with a keyhole. is not here." But I can see it! It's in the picture! (And that extra full stop after "keyhole" is not a typo on my part.)
So I EXAMINE CHEST and get told "You open the chest, and inside is a crowbar." Hang on. I've already got that. You can repeat this again and again, but I didn't want to open it. I only wanted to examine it.
OPEN DOOR: "The door is locked."
UNLOCK DOOR: "The door is locked." Sheesh. I've got three keys and none of them work.
I resort to violence, USE CROWBAR, verbs like JEMMY, LEVER, PRY, PRISE, PRIZE and nothing works. YELL, SCREAM, SHOUT, PRAY, THINK and so on. Nothing works. I'm stuck at this point. Is there a way out of the treasure room?

335 days later and I'm still stuck in the 'final' room that has no description apart from '...'. I'd really like to get this one finished off so that I can submit a solution to CASA. Does anyone know how to get out of that last friggin' room?

The only object you can drop is the meal, so I tend to think it's got something to do with that, but, as I've said before, eating the meal kills you and sends you back to the start. The only verbs I could think of that get any sensible response are THINK, PRAY and YELL/SHOUT/SCREAM, but I think they are just standard responses.

Any hints for this poor lost soul?