Really neat!
Not sure if it was fully intentional but the time it took for the momentum to slow down from movement really felt like it added some weight to the mech.
I wasn't expecting the dialogue at the start to give a little bit of story and explanation to the weapons, like the tip to take out the enemies to get mortar shells for your own mortar, a cool direction to take with the resourceful theme.
I came across an upgrade for the weapon in slot 1 which I wasn't expecting to find either, certainly felt like the more I played the more there was hidden around to discover which was honestly kinda rad.
The looks crisp and thematic, both in the art aspect and the gameplay aspect, like the map felt like it fit as a kind of radar / sonar look.
Overall I thought it was great, good job!