The game's a lot of fun, but there are two frustrating things about it. One is that the start is really slow, until you get enough upgrades to actually kill something, and the second is how the lag has a tendency to break your combo.
There seems to be a way to control what upgrade you get when you research an alien artifact, depending on how long you wait after you enter the upgrade screen. (Consistently get +5% tractor beam radius if I click right away, other upgrades are sketchy in this regard)
You should be able to upgrade your sidekicks, or at least have them scale up somehow once you've moved on from comfy to interesting or to the unlockable levels.
Great game! I really love how the learning curve levels off for each level and you can be really proud of yourself of how you can beat it consistently once you've gotten the hang of the rhythm!
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