>>64066920A basic problem for your scenario here and same thing for you OP
>>64066715 (OP) is that the T-800 comes from the future, whether it's going to 1984 or 1994 or 2025. Skynet would program it with knowledge of whatever time it was landing in, which is fucking trivial, Skynet can literally just look up "what were LEAs armed with at time X", I mean shit given public records laws and such Skynet could probably literally just give it the EXACT armaments of the entirety of the United States, every organization everywhere, at the time the Terminator lands. A database of everything would take a meaningless fraction of the petabytes of data storage a terminator would have. The entirety of Wikipedia text is about 25 gigs, and even if you add in media it's like 100 gigs.
So it's not going to be surprised by robots of the era or use of IEDs or the like, unless it's against someone with movie plot armor. All tactics and personnel and their histories will be right there for it.