...although I hope the difficulty is not too severe (but you just never fully know on this site!).
My prefix serves a trotter, that of which is not a horse.
My suffix might find water, at the tunnel's end by force.
My infix hates a robber, for they find another course.
My meaning is an honour, truly felt with no remorse.
What am I?
The answer is $8$ letters long, and the title is a clue.
I think this is hard, especially the middle two lines, so I will provide a hint (with some extra clues in there as well):
My suffix serves a want, not necessarily a need;
A golden lamp is thought, although a tunnel could succeed.
Quite often, light ain't sought, because a roof may shield the seed.
Above, the ring is short; below is where it has to lead.
My infix ain't complete, because it misses first and last;
Though this is not deceit, because when heard it's unsurpassed.
Use hands and not your feet, and then a question may be asked.
Once open, meet and greet; unless expected from the past.
@KevinL has made heaps of Riley Riddles, which inspired me to get back onto them as well. I love them, and I want to make more but am still working on my fourth anagram puzzle, simply because I have delayed it from the riddles I have been making. Consequently, my following puzzle will be the anagram puzzle (and this Riley Riddle is harder than some of my previous ones)! :D
I will be accepting an answer if (and only if!) it explains every clue (apart from the hint, because that is optional).