5a, little devil to perform a hit [6] I???c?
11a, is able to point to stick [4] ??p?
16a, river exists twice [4]
6d, look for expert with a remedy for all [7] ??n???a
13d, a breathing space everyone needs [7] n???r?l
17d, present-bringer from featureless Antarctica [5] ??n?a