Thank you!!
Yeah we know, we wanted to add many other things (even storywise ) but we have a full-time job and we did it in our spare time (also this is our first finished game).
About the colliders yeah, we hope to fix it sometime this week, the past 2 days we choose to rest :-)
About health and pickups we choose to make it a little harder because we didn't had the time to make other levels, we planned for different enemies and more weapons, we'll see in the next day what to add.
Last but not least, we'll make a GNU/Linux build.