// The problem for many is he achieved what he set out to do... //
Except he hasn't, at least not entirely. That's the paradox here. But in 2016 Trump set himself three priorities for the presidency: tax reform, healthcare reform (read: sod Obama), and infrastructure spending. He failed on two of those three -- indeed, he *still* hasn't come up with a replacement Healthcare Plan, promising that he had a "beautiful" plan ready without telling anybody what it is.
Let us grant that Healthcare Reform is difficult because it's so partisan, and because the late Senator McCain voted against the plan that came up in 2016/17 (I forget when, now, but it was three years ago). Since then, though, the *only* strategy has been to gut ObamaCare and then hope that the Supreme Court strikes it down, which is not incidentally the only strategy the Republican Party as a whole has had for a decade. And, as I say, since then there has been nothing but empty promises.
On Tax Reform, Trump did pass something through the Senate, so let's give him this one (regardless of what I think about it, it counts as an achievement, so I'll say nothing else).
On Infrastructure, though, there has been, so far as I'm aware, nothing at all. The odd thing is that this was the least likely to be partisan or divisive: everybody recognises the issue. It would need a lot of money to fix, but perhaps Trump could have passed something that tackled only some of it. But he never did. This seemed to drop as a priority or an issue. It seems that more or less everybody has forgotten about this, though, since it never came up.
In any case, in terms of Trump's three priorities, he succeeded on one, failed on another, and forgot about the third. He did not, therefore, achieve "what he set out to do", in this regard at least.