The concept was unique, genuinely one of the most creative games of the jam.
I'm going to point out the flaws just because I do believe this is genuinely a good and special game, I actually enjoyed A LOT playing it, the original idea stands out from the rest of the obvious puzzle platformers, it's unique, it's fresh, but it needs a bit of polish.
I think the main problem are the controls. They're super hard for an action game, the trash kept falling off and I had to go back and get it, and the wave of enemies was too fast for the restricted controls... I think you gotta polish the mechanic, but I can't say it wasn't fun. I always look for something "special" about a game, most people go for the same puzzle platformers, but this one is special, it just needs to be more user friendly.
Maybe WASD should just move the truck in the direction I'm pressing, not like "W is forward and S is backwards and A/D to turn" because those controls make it really hard for a top down view (since if your truck is in reverse or upside down pressing A/D is really confusing). You gotta focus the game to be more arcade-like, focus on fun, not technical accuracy. Maybe those controls are good for a puzzle game (for instance if you only had the trash mechanic) but it makes them frustrating for an action game. Also if I'm aiming with the mouse the most natural thing is that I fire with the mouse, not the space bar.
I think this is the main problem, the controls, the rest is good and the idea might really take off if you make the controls more arcade-fun-like you genuinely have something different than the rest of the game and I LOVED it. Great job so far!! Yours is just the second game in this jam I'll give 5 stars in originality to (and I rated like 40 already), keep it up!!