I was almost ALMOST ready to admit that I might have judged it too harshly, because I had fun with portions of Surface Tension and, despite what every idiotic fanboy thinks, I thought the first Xen level and the boss fight against the queen headcrab thing were god damn awesome. BUT THE LAST 2 LEVELS. WERE THE WORST. THINGS. EVER.
VALVE SUCCEEDS AT LEAVING A HORRIBLE TASTE IN MY MOUTH, GREAT JOB GUYS
Excuse me, but could you go into details as to why?
I'm speaking from a curiousity and design perspective, personally I found the last few levels a bit challanging but once you learned a few more techniques it was managable. Honestly I was glad a game finally brought the concept of a final boss back.
So let me know exactly what your experience and actions were please, okay?