The framing is the best idea here: the whole screen is a newspaper page, with NEWS in huge letters at the top and article text below, and the playable area is the photo in the story. I hadn't seen that before and it stuck with me. The vertical side tabs, UPGRADE on the left and CONTRACT on the right, integrate the menu into the scenery without cluttering it.
The layered desert in orange, salmon and dark red is a good readable palette, and the rifle barrel in the foreground gives it depth. Shooting works well, I clicked targets and they disappeared.
Also, you wrote on your page that the game will keep running after you stop developing it. Simple, direct and exactly the spirit of this jam.
Four things. The Kills / Score meter in the top left sits behind a grey circle (the scope? a gear?) and the text is unreadable, so I never knew my score at any point. The targets are floating heads with no bodies, hanging in the air over the mountains, which looks odd next to how careful the rest is, and a body or even a platform would fix it. There's no hit feedback at all, no sound, no +1, no animation, the target just vanishes. And I couldn't open the UPGRADE or CONTRACT tabs by clicking them.
The newspaper framing is too good an idea to stop there.