The video looked very like Serious Engine, so I downloaded it to see. Nope. Its Unity.

Comically long intro of a narrator and text. Ok, I’m a homeless traitor in Nazi Germany, trying to get my dog back.

Got out of the truck. Oh good. A box jumping obstacle. Hit the space bar. No jump. So I keep trying. And it knocks this box back into the corner, where I can see a mug of something floating there. Health or powerup or some shit. But I can’t get to it because I just kicked this box in the way.

I finally checked the controls. There’s no jump, just kick. You don’t jump in this game. Like old DOOM.

I gave up. I’m in this far. I’ll try it again later.