I'm encountering a couple of bugs and some minor annoyances in the PJB download version that mean I couldn't beat the first level.
1) One of the ground bots got stuck in the rock
2) One of the permanent laser flying bots is stuck in the air and I can't progress any further.
3) In the section with a few permanent laser flying bots, the platform after the spikes is too small to land on while also avoiding the lasers.
Also, I wish there was better visual feedback for hitting flying enemies. It's fine for the ground types.
The artwork is superb though.