Hi tlmark,
It looks like the "usual"
wear cycle that happens to A10 engines
Wear on the timing side bush due to mileage, lack of oil changes, dirt in the lube system and or worn and leaky
oil pump
The lower oil pressure does not open the pressure relief valve that diverts oil to the cam trough
The cam and followers wear and throw shrapnel at the pistons that chews them up and scores the bores
More metal particles gets into the return oil side which makes crap of the pump and onto the oil tank where it
then feeds back down to the oil pump doing its worst on its way round the system
Time for a full bottom end rebuild
John