This is quite an interesting take in the dungeoneering genre, making "combat" a direct binary check if you brought the right item to beat the enemy's weakness or not while needing to coordinate different party members.
Kudos for doing a pretty detailed tutorial to help the player learn how the game works!
The art is kinda the weak point here, there's plenty of free assets out there that could make this look quite a bit better, even as placeholders. The music loop also felt pretty short, while there didn't seem to have any combat effects for the actions, although I guess it would be quite a bit of extra work to add that kind of stuff at this early stage.
As per your feedback question, the most frustating point would be that one can't see the whole dungeon plan in one go, needing constant scrolling back and forth to can be frustating
For strategy, well, trying to grab everything, spread out the items among the party to beat each line of obstacles as best as I could.
Pretty nice work all-around, felt quite original and would love to see more like this!