what means "評価欲しさに来る?


This is a line of dialogue Shingeki no kyojin S2 05:

> 自分の体調も把握できねぇやつが、 評価欲しさに来ちゃいけねぇ訓練を受けちまった。

what means "評価欲しさに来る? In general, when 評価欲しさ is used?




> 評価欲しさに来ちゃいけねぇ訓練を受けちまった。  
>  what means " **評価欲しさに来る**?

You're not parsing it correctly, I'm afraid. 評価欲しさに modifies 受けちまった, not
来ちゃいけねぇ. So the phrase you should be looking at is 評価欲しさに訓練を受けた, "received a
training only for evaluation".

> 評価欲しさに（≂ 評価が欲しくて/評価されたくて）、｛（来ちゃいけねぇ）訓練を｝受けちまった。

So the whole sentence means "Someone who can't even assess/control his own
physical condition ended up receiving a training {which he shouldn't have
participated in}, only from a desire to get (favorably) evaluated / just for
evaluation (or a grade/approval/admiration)." As you can see, the reason for
来ちゃいけねぇ (he shouldn't have come) is 自分の体調も把握できねぇ (he is incapable of
assessing/controlling his own physical condition).

* * *

「XX + 欲しさに」 means "(only) for XX", "(only) from a desire to get/obtain XX."
Examples:

>   * 名声 **欲しさに** してはいけないことをしてしまった。 I did something I shouldn't have done,
> _(only) from a desire to gain_ fame / a reputation.
>   * [金]{かね} **欲しさに** 好きでもない男と結婚する marry a man I don't like _just for_ money
>   * 主役の座 **欲しさに** 監督に[媚]{こ}びを売る butter up the director _to get_ the major
> role (in a drama or movie)
>




> 評価欲しさに来ちゃいけねぇ訓練を受けちまった。  
>  what means " **評価欲しさに来る**?

You're not parsing it correctly, I'm afraid. 評価欲しさに modifies 受けちまった, not
来ちゃいけねぇ. So the phrase you should be looking at is 評価欲しさに訓練を受けた, "received a
training only for evaluation".

> 評価欲しさに（≂ 評価が欲しくて/評価されたくて）、｛（来ちゃいけねぇ）訓練を｝受けちまった。

So the whole sentence means "Someone who can't even assess/control his own
physical condition ended up receiving a training {which he shouldn't have
participated in}, only from a desire to get (favorably) evaluated / just for
evaluation (or a grade/approval/admiration)." As you can see, the reason for
来ちゃいけねぇ (he shouldn't have come) is 自分の体調も把握できねぇ (he is incapable of
assessing/controlling his own physical condition).

* * *

「XX + 欲しさに」 means "(only) for XX", "(only) from a desire to get/obtain XX."
Examples:

>   * 名声 **欲しさに** してはいけないことをしてしまった。 I did something I shouldn't have done,
> _(only) from a desire to gain_ fame / a reputation.
>   * [金]{かね} **欲しさに** 好きでもない男と結婚する marry a man I don't like _just for_ money
>   * 主役の座 **欲しさに** 監督に[媚]{こ}びを売る butter up the director _to get_ the major
> role (in a drama or movie)
>

