Here is the full list of all 11 Welcome to the Game achievements.
Make it to the Red Room.
Make it to the Who Am I secret ending.
Make it to the Where Am I secret ending.
Beat the game with out getting hacked.
Beat the game with in 7 days.
Visit all active deep web sites.
Solve Claffis on the first try.
Get to master level of the DOS_BLOCKER tool.
Get to master level of the K3RN3LC0MP1L3R tool.
Get to master level of the CloudGrid tool.
Finish the tutorial.