Hey thanks for playing!
Regarding your points:
- The demo ends with the end of Level 1 and after that you're out of the factory and in to "Maynard Forest". So there'd be new enemies, new tilesets, etc. I thought about ditching the "key search" mechanic for the 2nd level since it's a forest but it is in place for now. To me the only alternative I can see is making larger levels and having them take longer to get through (a la Mega Man).
- I definitely plan on sprucing up the enemies a bit. Most of the art on them is first pass. I've come to realize that they need to pop off the background a bit.