If she comes the game will end for the player because she is the last stone he waits. There is a wordplay here. It can mean many things but according to me if lover comes everything will be about her and the existence of other will not be important anymore.

We are working hard upstairs.

Biz yukarıda sıkı çalışıyoruz.

 Yours is more literal.

 thanks

One who doesn´t sadden for what s/he doesn´t have and be happy with what s/he has is an intelligent person.

 Great translation but you have one little mistake. But it seems you corrected it in the second version of your translation. Here is it:

Literal: Prefer losing to an immoral gain. Pain of the first one is (wrong) a moment, the second one´s stings of remorse last for the lifetime.

The verb "last" is the common verb of two sentences and you should use "last" instead of "is" Your second version is correct

 It was hard to translate. Maybe i did a few mistakes and someone can correct them.

 Some lyrics are missing but it is not very important.

Here is the song: http://www.youtube.com/watch?v=z6yrDtfv1t4    

 Hit my chest. I open a vegetable glasshouse enterprise at where you hit and sell roses to the world.

There is an old saying in Turkish "The roses grow at where your teacher hits you" I think writer changed this in his/her mind like this "The roses grow at where beloved one hits you" then s/he exaggerated it.

sakın ağlayayım deme

don´t say ever let me cry.

This is a literal translation. It means:

don´t ever cry.

They asked to Hodja : "What is the definition of unhappiness for you?" He answered "Not to understand the purpose of your own existence." According to the science the purpose of our existence is not different from other creatures. It is procreating. How can a person be satisfied with this when even some of smart animals cant be. This kind of answer never made any human happy. We always sought a higher purpose than this. Some of us believed there is a God and there is another world better than this; our life here is only a test.

Also many of us believed there is no God and there is no significant purpose of human life and we should make our own decisions. Especially existentialists thought that way. According to Sartre we are strangers in this world. We live in nausea because we are condemned to freedom in this meaningless world. And we don´t have any purpose. Camus calls this situation absurdity. According to him we live knowing we will vanish one day and trying to live like this is absurd. And only rational thing we can do is to revolt against life.

Some of us thought we have power to change the meaningless to significant and built utopias. For example Nietzsche always criticized people living like sheep. And he hated priests for running the morals upside down and changing them in favor of weak. According to him only powerful people should decide what is right or wrong. He always dreamed a world ruled by super humans. Or we can say super bullies. But Nietzsche was very different from this super human he imagined. He was a very sick person both physically and mentally. He was nearly blind. He was an intellectual rather than a warrior. And his ideas in his works contradicted one another many times. His ideas and actions also contradicted one another. While he was defending the right of powerful to do anything he wants in his works, he hugged crying the neck of a horse beaten by his owner. He tried to make human life significant but he even failed to make his life so.

If we think clearly we can see only a god´s existence can make our lives significant. It is not important whether a god exists or not. We need one. Knowing this, people created many gods. And these gods gave them a higher purpose. It is to improve themselves, to become a righteous person and win their approval. They also promised them endless lives and eternal justice. And believing these made people happy. It is not important they are true or not. Only important thing is having a higher purpose than procreating. So we can´t blame people who believe a god for being weak or irrational. It is a very rational thing to consider our lives more valuable than animals´ lives and it is not a weakness not to accept death. It is nearly an instinct and most natural thing to do, defending our existence against it both mentally and physically.