This is the exact same equipment I bought for my mother about 20 years ago.
She loved it.
The first photo is a mincer/chopper attachment.
The power base and turntable with the mixer head attachment.
The food processor type slicer/shredder attachment, The ice cream maker.
The mini blender jar. Without it's lid, it will screw onto the blender base and blade, and you can blend small amounts of food, and store it in the refrigerator until needed. I used this a lot for my mom when she could not chew well. I had tons of mini blender jars for that purpose.
The meat grinder housing and worm. You need a grinding plate, and knife, and a screw type end cap for this to work.
Spiral dough hooks for bread and cookie doughs.
The hole at the rear of the mixer attachment is for the meat grinder attachment. You reverse the mixer attachment on the base, and set a bowl under it for use with the meat grinder.
You can find instruction books sometimes on Ebay, if you search for Oster Kitchen Center.