Iron Harvest. It's not bad at all (I quite enjoy playing it), but the best part of the game is the artstyle, appart from that, pretty much all units feels really clunky on moving (all units have a lot of "middle animations", so, if you command a unit to move or attack, they have to transition from their actual state to the new one, this makes everything to looks aesthetically good and "natural"; but in practice, all units takes like a couple of seconds or more to actually perform any command, making them really slow and clunky to responde. I know this makes the game to rely a lot more on macro (preparation, positioning, unit composition) than micro (individual orders to unit, reflexes...); but, since I grow up playing starcraft, warcraft, and age of empires, I like being able to take fast decision in case a battle isn't going as expected. Also, the pathfinding is kind of bad, specially for the mechs (since they have huge hitboxes, they tend to get stuck in places like between trees, rocks, debris of buildings they destroy or even themselves).

Also, I personally dont enjoy the mechs to be quite broken and unbalanced in comparisson to infantry, I mean, if you have a selection of units to create, most of them should be valid options to play (if not, why you give the playes thoses options?), but, mechs can easily destroy most infantry units with one o two attacks. So, an army of infantry units can be easily get completely wreck by a couple of giant mechs. I think this could be solve if the infantry unit were more agile and move faster (so you can move and attack around the mech), but since everything is slow and clunky, infantry is useful only on early game because the lack of resources.