Thanks for the kind comment!
The menu system is inspired by that of Battle Isle 2, holding fire while selecting the option. Since the default is context sensitive, it means you can just tap fire to do the most likely option (move when pointing to an adjacent empty square, heal when pointing to an adjacent injured colleague, attack when pointing at an enemy, etc). But the shortcuts are useful when the thing you want to do *isn't* the default option.
This particular game is just a proof of concept for the tactical combat engine. I hope to make other games in the Star Cadre series with a variety of campaign modes. So in future you might be able to take Medic Usteme's career further.