I've only gotten about 5-10 minutes in.... it's amazing! I love it. The thing I love most about the gamer is it feels very authentic to PS1. I thought the graphics were too good for PS1, but, 1, Looking at it, the textures are about on par, the number of polygons looks about right, and finally, the size is perfect, this could legitimately have passed for a PS1 game. It's amazing!
Alright update: Haven't beaten but this is amazing, it's a trip, and I sing the praises wherever I go!