Hello all,
The 'NEW_ACHIEVEMENT_NAME_0_4' achievement for Spacewar is marked as unobtainable:
However, the 'game' is a developmental resource intended to be used by developers to learn the Steamworks SDK. I believe we are intended to add the achievement to the code ourselves in the process of learning the SDK. When a developer adds the correct code to the game the achievement unlocks normally (ie: it's obtainable).
I posted more details in the solution linked above. I thought I should also submit this petition to have the achievement unmarked as unobtainable.
Best regards to all.