Hi invadererik, thanks for taking the time in checking out the game and leaving a feedback.
Glad that you pointed out the lack of numpads on the Mac laptops since, I had actually added additional keys (Page Up / Page Down key) for the aim buttons on all control layouts in consideration for laptops without numpad in the current version (v0.7.3). However, its also my fault since they are not listed in the How to Play and me once again forgetting to update the instruction list. If I'm not mistaken and correct me if I'm wrong, that from my limited understanding those keys are accessible with the Fn + Up / Arrow keys on the laptop, even Mac ones. I will try to add more keys in consideration for laptops and also a note to update the control instructions on the next update. I think the location for those aim buttons for laptops could have been in a better location but I don't have a laptop with a compact layout to figure it out so do let me know if you can suggest some keys.