I just recently started playing the Robot. Man, is it just me or does the Gungeon mock the hell out of him? Over every run I've done so far, on room completion, I've maybe gotten 2 Armor pieces total, and seemingly infinite heart drops. I have probably gotten the Heart Synthesizer about 7 times total in my 187 hours played, 7th time was my 3rd run of the Robot after perfecting a boss. On the Heart Synthesizer run I just finished, I also opened a Monster's Blood item. Before I left the third floor, I looked on the minimap. There was at least 3 full hearts just sitting on the floor unused. In one room, it gave me a full heart, and then the Heart Synthesizer said f*ck you and then dropped another half heart.

What did this poor wee Robot do? :(

Also, I thought Master Rounds were supposed to give you 2 armor per. I am only getting 1.