As SharpShooter3D runs on the GZDoom engine, it inherits Doom's console. By pressing the "tilde" (~) key, you can bring up the console and use it to switch to different levels by typing "map levelnamehere".

For example, if you wanted to go to the final map ("bunker"), you would type "map bunker" in console.

Because SharpShooter3D doesn't follow Doom's map naming conventions, I've included a full list of maps below, including some unused development maps.

EDIT: Since the Extreme Edition update, the console is disabled by default. You can reenable it by creating a text file named "autoexec.cfg" in your SharpShooter 3D directory with the string:

• hello (Driving to the city)
  
• futblchk (Football Field)
  
• helltrns (Train level 1)
  
• tothe (Bar fight) *
  
• home (Returning to your apartment)
  
• mordor (Video game segment)
  
• map06 (Escape the police)
  
• metro (Metro station)
  
• trainss (Train level 2, get arrested)
  
• dream (Motorbike dream sequence)
  
• jails (Jail...)
  
• if (Join the riot)
  
• the (Molotovs, free the tigers)
  
• kids (Mall)
  
• are (Rioting to Red Square)
  
• united (Red Square)
  
• horr (Mausoleum, caves) *
  
• bunker (Final boss)
  
  * Exclusive to Extreme Edition

• test (A developer test map, including most weapons and enemies)
  
• dm02 (An earlier version of a singleplayer map)
  
• dm03 (Ditto)