Here is the full list of all 11 Welcome to the Game achievements.
Visit all active deep web sites.
Solve Claffis on the first try.
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.
Make it to the Red Room.
Get to master level of the CloudGrid tool.
Get to master level of the K3RN3LC0MP1L3R tool.
Get to master level of the DOS_BLOCKER tool.
Finish the tutorial.