Good game - time consuming, easy enough to complete without too much hassle. Ran into a bug on survival mode - at level 37 just stopped sending enemies, but I went back to the menu and restarted from level 35 and got the badge just fine - just remember to save and quit to the menu when you hit level 40 (I screenshotted it just in case). Also, pay attention to what guns do what and save up a few of the ones with a large blast radius for the last couple of levels of survival. 5/5
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