It would have been better if it staggered along, getting increasingly wrecked by the slightly uneven terrain and small arms fire it was taking, then collapsed onto the barrier frying itself but overloading the similarly overengineered Enclave systems.

Also if there was a character who literally looked into the camera and said something to the effect of "lmao, Liberty Prime was built by the Enclave pre-war and only ever saw action against the successors of the very people who built it in the first place."