I know it's a business endeavour and you try to get as many people to keep playing as you possibly can, but I wouldn't spoil the thing about blocks larger than half the row/column they occupy. Some do like figuring it out on their own.
Boring combat with no actual combos, poor animation [just because it's stick doesn't mean it needs to have poor animation, duh] No aerial combat, depends on rage to be any fun, weapon upgrades don't bring anything new just more damage. To me, it's 2 of 5.
The Flamer Joe tactic for Hell Dining sucks imo. Not fun at all. A maxed grenade launcher is way more exciting than watching everything getting done automatically.
Fun, but it could have been much much better. I don't like the controls, and bigger microbes should be slower, so starting each level wouldn't be such a pain in the ass.