There are way too many tickets at the beginning. You need currency to play the rounds but can't get enough early. I'd suggest swapping the 5th threshold reward (3 tix) with either the 20th or 45th. Give us more tokens early rather than tickets. If you're going to give tickets as quest rewards, don't start those until much later in the chain.
I don't like the art style. Doesn't feel like FOE at all (unless you count the goofy ads I see for this game). Looks more like Clash of Clans. Would appreciate a more realistic style in keeping with the rest of the game. The colors are also a bit much. Idk how it looks for colorblind people but might be difficult to parse.
Animations are way too much. I don't need to see all that. Just show me the numbers w/o all the fluff.
So far everything about this feels way harder, grindier, and less fun than the Halloween event. The bonus cards feel super underpowered and useless. Like the heal 1HP/deal 1HP. What's the point of that? No one other than the first enemy has 1 HP. At least make it 3/3.