Thank you for playing and for the feedback!
That's definitely something I felt as well, but sadly ran out of time to increase the complexity and player agency. I had planned to have two additional enemy types: one faster and one a lot beefier and stronger. Then I was also going to add a new small area spell for heavy damage.
So you would have more strategy with using scorpions to stall, sandstorm for groups and entomb (the new spell) for tough / close groups.
Thanks once again!