For me Die Hard is one of the PC Engine hidden gems.
Previously I had always dismissed it because of poor reviews and that it was a Pack In Video game.
Nearly all other similar era Pack In Video PCE games had been supremely shit.
I'm not saying Die Hard is super league good, just that in my opinion from what I've played it's a a decent game, I'd rate it 8/10.
FTW! =
"I hates teh Super Famicom ahhh........."
Edit: I've not beaten it though, I get stuck in the same place where it seems everyone else does,
will have to pop over to Game FAQs to see if there's a guide to get past that bit.