Heres what I currently use on hard settings except medium AI difficulty and Automatic Upgrades
- Bigger Crew
- Breath Easier
- Kitchen Capacity Adjusted
- Sinking Physics overhaul
- Enhanced Identification Book
- More Accurate Bearing Markers
- Sounds of War
- Functional RDF Antenna
- Course line +
- Time stamped markers
- Bearings for map tools
- Keep your periscope wet!
- Torpedo Los!
- Slower Time compression
- No Auto Alarm
- Auto Sub Lights
- Realistic ammo capacity
- Attack Disc
- Decimal Speed display
- UBoat SOP: Turn on compressor
- HardScope