- I really liked the concept of vacuum maneuvering for combat. The main problem is that that results in a lot of buttons for the player to become familiar with. A controller might offer greater flexibility and it's not as common nowadays for games to recommend that the game is played with a controller. With the keys, I found that I had to "search" for the button C/Ctrl a lot more so I would say for movement, try to stick to keys that are closer and more natural to the wasd. Maybe switching the mapping around (for example - change C/Ctrl to F) the buttons will make it a more fluid experience. Since that sort of maneuvering is one of the central aspects of the combat, focus on that first and then on all the misc functions that would be used less during combat.
- The combat seemed a bit easy so far with the help of the teammates. I may have missed that, but are you planning on making the teammates expendable or central characters in the story? Depending on the answer to this question, the loss condition might have to be different.