I climbed the needle many years ago.
from memory, getting to and around the needle is easy, just watch out for loose rocks, don't treat them casually as it's a steep rocky slope to fall down.
90% of the climb up the needle is simple, just a hard scramble rather than a proper climb. The last bit is scary but not technically difficult, but you should be roped up in case of a slip.
If you are just bypassing the needle, it's a scramble.