:) Thanks so much.
I did have a health indicator on the top of the screen (The icons on top left), but they just appeared and disappeared without any flash or animation so can escape, notice. Also, when the action gets tough in the later part of the game it would be difficult to also keep an eye on the indicator so I should have placed it better I recon. Maybe a bar near the ship. Thanks for the feedback :)
For the voyage, I intentionally avoided one. Partly for the mystery, but mostly because with a 128x128 resolution, any ui element will take up way too much space and the voyage length didn't have a direct purpose for the player