Wow, thanks for the extensive feedback and constructive criticism! We are well aware of a lot of issues (especially regarding the missing player feedback regarding ammunition and health). The level design was kind of a last minute hack job (by me, that is) with very little play testing. That's why the "death pit" made it into the final jam release. That's not at all good level design! Thanks for pointing that out.
We intend to develop this further into an (at least) more full fledged product in the near future. We are not game devs and we all have a normal day jobs, so developing a game in our free time is really hard (especially considering many have families at home)
But I'll keep everyone posted, on the progress here :)
Thanks again!