Recourse for patently unfair make-up exam?
Given that exams are difficult to create, especially make-up exams, it is just possible that it will work out when the instructor sees the results. I doubt that it was any sort of 'retaliation'. Wait for the grades and have a conversation. 

It is too early to take action until you see the actual results and their effect. 

Let me note that for some sorts of exams, writing intelligently about the problem is enough. If the problems are especially difficult then it may not really be possible under exam constraints to find a proper solution. But if what you write is "sensible", and demonstrates that you have the required knowledge, it may be enough, depending on the person interpreting the results. In any case, it is pretty much impossible to treat the results as "equivalent" to those of the normally given exam. A sensible instructor will recognize this.