Back in 2015, I participated in the Ludum Dare Game Jam. Working with 2 other people, I was responsible for the primary art assets (the player, enemies & environment), though I also created the logo and a few of the UI elements as well. The game was completed in about 72 hours.
You can see the original submission page archived here: https://web.archive.org/web/20210413144925/http://ludumdare.com/compo/ludum-dare-34/?action=preview&uid=47053
Robot (Player) - Marmoset
Alien (Enemy) - Marmoset
Arena - Marmoset