A buggy mess that I'd have to reset it at least once a day, where the established physics of the enemy attacks will simply change (bouncy shots that would have created a v-shape decided to go for an L-shape) or where you would simply all suddenly have zero energy. This is not a tactical shooter after all there's no room for tactics in this game only stats that you have to grind and pay for, you feel good overcoming a challenge this game though you simply feel slightly less annoyed.