I hope it was quite a fun time in this game jam. 
Even though it quite basic its very fun to play your game, the movement and shooting feels quite good. The thing I would probably complain about is the healthbar being visisble through walls, other than that good job!

Well done! Submiting a project in a game jam is to be celebrated and used to learn.

The basic movement was nice, but the jump felt a bit weird for this game. It was kinda slow and floating while the other elements of the game were faster paced. I think we as game developers (designers, programmers, etc) should determine what kind of experience we want the player to have and stick with mechanics (also count changing parameters of mechanincs) to enhance that experience.

I see on the game's page that you get more powerful when you die, but in game I think it lacked feedback on how the character was getting more powerful. While on the topic of the game's page, I recommend adding a few screenshots.

I know this project only has 1 level, but I think it isn't well introduced. Before the player realizes what it has to be done there are shots incoming from everywhere. Maybe create the respawn point in a hub room and you open rooms when defeating all enemies on previous rooms and follow the 4 step level design. On the first room you introduce one enemy with boxes in front of it so players will know what they are facing. On the second room remove the boxes to make it more challenging. On the third room a twist on the enemies behavior (maybe now there's one that is moving). Lastly on the fourth room the conclusion so that the player proves the mastery on the gameplay.

I hope this feedback can help you in any way. Don't feel discouraged and keep improving.

The movement is smooth, and the shooting sound effect is good, but I do want to comment on some aspects that can be improved, if you plan on continuing developing this game :)

The jumping is a little funky, so I guess playing with some parameters might be worth trying. The things shooting at me were extremely difficult to avoid and not get insta-killed from. Perhaps adding a life meter would fix the issue. On, say, five hits you respawn, instead of one. Also, a little visual improvement I think would fit really nicely is some splotches of color. The bullets look like paint balls, so I think it would be super cool to see them land and splatter on the wall for a few seconds before they disappear. Not only it would look really cool, but it would also be a visual marker of where the hit landed, so you can fix the aim. 

Another issue I had is not related to gameplay, but rather the theme and story. I'm not saying a shooter can't qualify for the jam's theme, though it's probably more difficult to achieve, but it needs a context, a story to explain where you are and what you're doing there. Beyond helping to relate to the theme, it will also make your game feel more than just a pocket dimension with nothing beyond it. It will keep the player invested, because they know who they are playing as, and that they have a purpose.

I hope some of this, at least, is helpful if you do come back to develop this. Or even for future projects.

Hi, your project is missing source. Yes, even the source on your games page isn't actually source, it just contains the game executable files.

Your source is everything a person needs to download your project, open it in Unreal, and hit Play to play the game. Please upload your Unreal project files to your submission.