Cool concept! Quite hard starting from level 3 if you don't get good rolls, i need to git gud...
I agree with the comment from scschulz2, an undo button during the planning phase would be a must, i clicked on the wrong button by accident twice and i knew before starting the execution phase that i was going to die :'(
Congrats on doing a cool game without using real game engine, it works very well and it's quite enjoyable to play!
For a one man team, it's a reall feat of strength.