i played this mod. and i will write some review. sorry for the bad english. english is not my first language. I just want to say what I feel.

The texture of the door is using wall texture, so it's hard to see. You'd better use other texture, or put up a sign.

When I first entered the room with the radioactive material, I thought it would die if I reached the radioactivity so moved carefully. but it wasn't.
Players who play original game think they will die if they touch radioactive materials. However, if you Set it to be damaged if touch the material, the game will be too difficult. You'd better change the radioactive material into water.

The structure in the corner can pass through. It has to be modified.

You have to sit down to find the passage to the next section. Hard to find. You must change the location of the passage or install a sign.

When you try to go up in a lift, the enemy appears in the open place and attacks. i died many times because don't have a health pack. it's hard.

The ending is disappointing. Ordering a player to leave the game is not a good way to end the game. You'd better put in a fade-out and send the player to the main menu.

I hope you do not get hurt by what I said. I just want you to make a better mod. There is no perfect person in the world. I hope you understand my words. I know it's hard to make a mod anyway. I hope you will create more mod in the future. :)