nice game so far, liked it :)
Would be nice to see the max pop count for 3 stars. Also, you can kinda trick most levels, cause junior is very fast in waking up the fat guy and thus gets not pushed down by following monsters/blocks.
Would be great if the precious food won't hide behind solid obstacles any more.
And you should rework the controls, my fishy bouncing endless when reaching shallow water. It just happens way to often that you try to reach something half hidden behind an object and then bounce around for 10s or something until you gain back control.
But still kinda fun to play
It helps when not having long shafts from 1st to 49th floor but to split them in like 3 pieces. At the same floor your old shaft ends, the new one has to start. So the elevator is not carrying like 9 persons all the way up and down to pick up a single one.
To get the Hard Badge, simply keep your 4 Soldiers, upgrade the two with the better Rifle Skills with BAR and Grenades and the other two with Ranger training. Buy a Corpsman/Medic when necessary. Afterwards, wait until you got 20 Points and purchase a Tank. The rest is easy going.
Keep in mind, that you are save from Artillery and Airstrikes if you have less than 6 units in your squad count, so if you want to play further and buy more units, e.g. mortar, sniper, officer, radio guy or mechanic, get an engineer first and buy a camouflage net to hide the extra units.
PS: Crates are great to get units some extra experience. If they land in front of your line of defense, let the medic go get them because he is way the fastest footmobile unit and don't eventually stops to shoot.