Hey there, happy to hear you had some luck with WebGL build, and we couldn't agree more that the project stretched the limitations of the platform. We decided to build to web as a courtesy to anyone not interested in downloading the game, and as an experiment in what would happen, having never uploaded a 3D project before. Now we know!
To jump start the project, we made use of Synty's SciFi City asset pack, and stripped out the demo scene of everything we didn't need. Custom weapons, enemy bots, and their respective animations were all meticulously handcrafted by our team's artist. You can find links to his other work and the aforementioned pack in the Attribution section of the game page.
In classic GameJam fashion, we allowed ourselves to get consumed by feature creep, so balancing took a bit of a back seat until the last day before the deadline, and it shows. We appreciate the feedback and are glad to hear you enjoyed it nevertheless. Thanks for playing! :D