Can confirm the linux version works without issues. Progression is slow in the beginning but picks up pace later on. I would most likely have survived even longer but got cocky in wave 10 and got stuck on one of the tube-entrances.
Strategywise it is not very interesting yet. You circle strafe around the map part with the ramps (location of health & damage up), up and down, up and down, in circles for minutes at a time. Running backwards shooting the flying breads while doing the circle strafe technique. I would have loved to see some mechanics to lessen the circle strafing.
All in all it is a decent game. Great start for a bigger game if you decide to develop it further. If you do, make sure your levels contain more verticality to make things more intresting and try to have less deadended paths (or provide a map).