I like the player mech visuals, and the firing and flamethrower effects looks pretty cool. Also noticed the dinamic destruction of one of the buildings, with is a nice touch not that common in Jams.
Besides that, at the current state of the game I would suggest to make some kind of feedback when shooting at an enemy, since its not clear when the enemy is being damaged or not.
Also, the game crashes each time I pick up scrap spawned from a defeated enemy.
I see the potential here, and I do higly encourage you to keep developing it bit by bit.