I had to pick China Warrior. Even when I actually enjoyed playing it back in the day, it was a horrible game...clumsy, incapable, and altogether shoddy. I still play it once in awhile for nostalgia purposes, but it is certainly one of the worst-programmed games they ever released. Maybe someday I'll rip the sprites out of it and do a sequel on the Duo, lol.
I didn't play Blazing Lazers until about a year ago...and I was actually quite impressed with it, as it seems to have aged well.
I don't really "hate" any games...except one, and you all probably know which one it is.