Well, it's not totally toast yet, but it's now officially one hella expensive project to be sure.
A new compressor could be fitted - while one could assume a direct replacement isn't going to happen given the age, there's not a lot to domestic appliance compressors (power, goes-in and comes-out refrigerant connections, thermostat) and a good tech could come up with a solution.
The damaged tubing could be repaired though there will be cosmetic damage incurred (fortunately in the back of the unit).
Charge and purge ports could be installed, the system integrity could be tested with a vacuum pump, and then the loop could be charged up with whatever working fluid is needed (even R-12).
But all that's gonna be a heavy hit to the wallet.
My SWAG would come in around $600 all up and running again, and I may be a bit optimistic with that...