Did you ever play that addon mission where you had to take down a Phase 1 Dark Trooper with nothing but your Bryar pistol?
That was intense. ; )
Or how about the official level where you had to fight a pack of Kell Dragons with nothing but your fists? LoL.... try doing that in JK (it's nearly impossible, but in DF you can do it with skill).
The Dark Trooper Assault cannon I loved, because it wasn't just a "kill everything" gun like the BFG in Doom, yet it was still respectably badass in all its destructive power.