Wales ended an 18-test losing streak against Japan in July when Matt Sheratt was Interim Head Coach.
Tandy took the reins after leaving his role as defense coach with Scotland and added Sherratt and Wilson, who were a team in the summer.
Former internationals Rhys Patchell, Duncan Jones and Dan Lydiate will also help coach for a tough November schedule.
Wales are ranked 12th in the world and will go up against sixth-placed Argentina, second-placed New Zealand and first-placed Japan.
Tandy is expected to beat the brave flowers of the pumas who appear to be the strongest rugby championship scalp.
Wilson, who left his role as Harlequins boss for the international opportunity, wants to see progress from a new-look squad regardless of the results.
“We talked about that if you close your eyes, you can see how Wales play the identity and model of the game that we want to create,” said the former dragons, the coach of Cardiff and Cardiff Coach.
“It’s going to take a little bit of time and a lot of hard work to put in place to build that.
“We want to find positive steps from where we work in training. Can we build an identity and style of rugby that is attractive and winning?”