Honestly cant say that im a fan of the game as it currently is.
Spells needing you to do a sequence of inputs that are seemingly random just doesnt feel great, even if it pauses time while youre doing it. It just breaks the otherwise fairly fluent gameplay.
The one big thing to be improved is adding some form of communicating the layout of the level, so you know where the towers you have to defend are, before you have to actually defend them.
(Also ideally the shop should tell you how much an upgrade is, or what it does exactly)
The art assets in general are pretty cool tho!