My worst was a 1980's vintage Bersa .380. I do not remember the specific model, but it was a horrible ***. The single action pull was over 20 pounds. The DA was basically unworkable. I would estimate about 40 pounds. I am not exaggerating. It made a Keltec P11 feel like a tuned match grade trigger.
Runnerup was an Iver Johnson TP-22, the little PPK lookalike in .22LR. It actually was bad in only one respect, the hammer would eat your hand up. I have small hands for a guy, and even I could not get anything resembling a normal grip, without gouges being torn in the web and back side of my hand. Which was a shame, it looked good for a cheap pistol, and was reliable. But I got rid of it post haste.
Runnerup was an Iver Johnson TP-22, the little PPK lookalike in .22LR. It actually was bad in only one respect, the hammer would eat your hand up. I have small hands for a guy, and even I could not get anything resembling a normal grip, without gouges being torn in the web and back side of my hand. Which was a shame, it looked good for a cheap pistol, and was reliable. But I got rid of it post haste.