Most of the upgrades are very self explanatory, but not all. Things like Earthquake, Mental Obliteration, and Stupefy are not immediately obvious what they do. And now that they're separate upgrades, I think it'd be very helpful to tell the player what they're getting themselves into.
So, I'd propose adding info panes to each of these which briefly describe what they do.
Alternatively, it could be added as a tooltip entry on the upgrades themselves.
Most of the upgrades are very self explanatory, but not all. Things like Earthquake, Mental Obliteration, and Stupefy are not immediately obvious what they do. And now that they're separate upgrades, I think it'd be very helpful to tell the player what they're getting themselves into.
So, I'd propose adding info panes to each of these which briefly describe what they do.
Alternatively, it could be added as a tooltip entry on the upgrades themselves.