I liked the idea of going to a certain place to reload, and the visuals are great, but the survivors escape to easily. Also, the earrape sound is definitely a no

It was fun tbh. The only problem was about the uncontrolled civilians since nobody tells that you need to save them. Also consider adding R as a reload key.

The graphics are fun! They are all different, yet the trash atmosphere is fun in this case!

Consider adding some music and more SFX.

Even though your game isn't top quality, don't be too hard on yourself! There are many chances to improve your development skills and submit to future game jams if that's what you enjoy doing! I like the concept that you're being attacked and need to keep the civilians from escaping, and I know that there are shooter games that have protection levels in them that work really well. I think you should try to focus on a game concept that you're excited about and that feels fun and unique to you personally, because that makes the development process much more enjoyable. Since you're being hard on yourself it seems like you weren't as confident about your concept or how fun your game would be, which doesn't have anything to do with the art or the gameplay but with how you feel as a creator. I mean, game jams are an opportunity to make whatever you want so they should be fun :) Keep working and you can hone your skills even more in the future!

Interesting game, I kept losing without knowing why but other than that its pretty good.