But I’ve only gotten to level 15 or so now (and haven’t played again since — turns out my computer is struggling a bit on some of the levels with bosses) so don’t know how I’ll feel if, say, level 18 proves to be particularly challenging and levels 1 through 17 feel by that point trivial.

The first five of those error messages spawn upon startup and then more continue to show up once I actually start playing. And it’s playing at roughly half framerate the whole time.

I guess it depends on whether you want people finishing it quickly or not, or the intended audience or blah blah whatever.

One idea is to unlock extra lives as you progress. So if I die on level 10, I get +1 life; level 15 would give +2. Or maybe that’s dumb.

I dunno how hard the last few levels are, so I guess I can’t really say one way or the other.