I'l try. Left to right, top row:

Half cropped one: 3rd degree of i don't really know what. Probably from amateur sports event. | Basic red star with hammer and sickle: no idea what they are. | One with the ship: don't know. | "ударник XII пятилетки": what it says, yes. Somebody worked their ass off in five-year-plan and got this thing to show for it. | "гвардия": for service in soviet Red Guards. My granpa had one too. | Modern Russian CoA: no idea. | "I донор СССР": donor USSR 1st degree. Usually for blood donations. | "1941-1943 брянск": my grandfather had this one. Got if for beating nazis out of city of Bryansk, but it might be just a commemorative one and given to people who didn't actually fight there for other reasons. | Blood drop one: you could get pins like this just for blood donations. | "ВВМВД": i think that stands for "Внутренние Войска Министерства Внутренних Дел". Internal Forces of Internal Affairs Ministry.

Middle, left-to-right:

Sickle and hammer with wings: i think it just a basic pin from Aeroflot uniform. | French thingy one: don't know. | "воин-спортсмен I": from some army sports event? | "III донор СССР", like the one above, but third degree. | "1 разряд": another sports degree of… Some sports, i guess. | Backpack dude: no idea, can't read it in this resolution.

Bottom, l-r: "отличник советской армии": for exceptional service in the soviet army, of course. My grandfather had a one like that but with a different design for some reason, i think? | 3: absolutely no idea. | "норильск CNC": no idea what it is and what it has to do with Norilsk. | That huge one: no idea. | "ударник коммунистического труда": probably related to 4th in first row. | "moscow treasures": idk. | Next one: "пожарно-технич(еская?) выставка калинин": firefighting equipment exhibition in Kalinin, apparently.