I played it a lot on pc, think there was like 2 bosses back then, the skeleton and the bug thing that spawns from the orbs. Then they did a huge update like a year or two later, and we went back and farmed the new bosses, got laser guns and angel wings and stuff.
I have no idea about any of them items you mentioned, so I guess they've changed it all again. Great game though about the best 2 dollars you can spend on pc.