I really enjoyed this game,...but,...

[RoH]

...I wanted to get a few achievements,... switch controls, never use rotation,...never use some specials,...

...and after Level 9 I lost connecton to the "server".
The game tries to reconnect but nothing happens after 10Minutes,...20Minutes,...

I read a lot from here in the forums but do you know what this means in this case for me?

It means: I lost 30Minutes from my lifetime trying to get this achievements.

I learned
a) Achievements are motivating but also frustrating if there are multiple servers that lost connection without the possibility to recconect
b) ... never trust the level before finish.

Edit:
Well, I finished level 10 after the disconnect... not one single achievement,...
pure waste of time (I enjoyed the game itself but then I was very unhappy with this Achievement-Design)