Cool idea; I always like sort of "guild management" kind of games where you send someone off to do a mission off-screen with whatever preparations you can manage.
I like the different kinds of metals doing different kinds of things, but having to make all of them again every time got very tedious very fast. I think I personally have preferred to have some information about what the chameleon was going to walk into at the start, and then equip him accordingly (maybe with some kind of scouting mechanic or something?), so that I'm not continually making things in vain.
The art is really good, and the concept feels like it can work really well, but I definitely got a bit frustrated with having to do the same things repeatedly.