In august I released other version of that game but then I removed it because of ending bug and source code corruption. New version was published in september. I decided to publish old version of this game and short walktrough that also shows how to avoid enemies in hard version, some secrets of that version (but you have to push button "N" then "4" to take and verify items). So there are 4 versions total:

Old version - old version playable and hardest one, but ending was corrupted and game over too.

Alpha prototype - a prototype that show some interesting options such as poster feature. 

Quest 1 - main game, poster and message hidden, added more hidden screens.

Quest 2 - short quest where you can save alien Jinx.

Also here video link on vimeo