I love mechs, and this game didn't disappoint. A vampire survivors wave survival game but as a big stompy mech, the low speed does feel appropriate here.
The small round "training remote" enemies are really annoying though, they should be slower, and the constant barrage of shots flying in off-screen should be limited to big, slow moving enemies, as it just becomes a focus on dodging shots instead of destroying enemies.
That becomes moot though as the volume of enemy fire becomes so high and the player's movement remains slow, so that you cannot help but take damage.
I'd add some terrain features like destroyed cities, vehicles/clutter you can stomp on, roads you walk on faster and swamps that slow you and the enemy down etc.
Regardless I think there's promise for this, with balance polish, more enemies, upgrades etc. it has potential to become a solid commercial game.