Film scans are not supposed to look perfect right from the scanner, and the software that comes with them is not designed to do so. The ideal film scan looks flat and lifeless; this lets the scanner capture the full range of tones, even in high contrast scenes. You MUST edit the scans in Photoshop or Lightroom or whatever editor you like, if you want to get normal tonality from scans.
Read this tutorial I wrote: Introduction to Film Scanning
Then read my tutorial on using Vuescan to scan BW film
. Most of the settings I give should work on your Epson, too (I used a Nikon scanner for the tutorial).