Great game, lots of potential.
The only problems I have are:
Balancing:
The first few rounds were to hard since you are practically dead if you triggered a howler.
But as soon as I got the pistol it got a bit to easy. I have not died since.
Guns are to strong compared to melee options. (Probably mainly because of the next problem.)
Surge mechanic:
It does not seem to work as expected. I did not trigger a surge once on the first map, and on the second one only a few times.
Based on the descriptions it seems that using guns should increase the likelihood of a surge, but that does not seem to be the case.
General:
Some equipment has to be equipped by drag-and-dropping it into the right slots, other equipment has to be equipped with right-click.