All fame achievements can be earned within 3 minutes at max - Start up a single player game (or continue your current one), hit "T" to bring up the chat box and enter the console command as follows:
#setfamepointstoall 1000. Exit to main menu - click continue - once loaded in, all fame achievements should pop.
Console Commands disable achievements only for that play session, once reloaded achievements are unlockable. You can use console commands to give yourself an edge in the game, exit to main menu, reload and start hunting achievements.
Commands change as game updates. Here is a link to most recent commands:
https://scum.gamepedia.com/Admin_commands