I don't normally play tower defence so only did a quick session, but really enjoyed it!
I failed my first try- I saw a few different waves of enemies and satisfying to see my towers + people do their thing . I didn't try again as unsure whether doing anything different would have had enough effect... was there a way to know a rating/how many more waves are coming etc, so if you fail, you'd know if you were close to success?
didn't feel frustrated at all, so stopping at that point is prob more on me- I know the game is supposed to be hard and I just don't tend to have patience for hard games.
It felt clear what I was suppose to do, overall ux was intuitive. I didn't know about unlocking spells, I noticed there was a menu button at some point but wasn't sure what to do with it, so just played game instead - possibly cos I didn't read any instructions etc...