would be nice if it was more obvious which boxes were credits and which were ammo. Also, overwatch with bayonet is kinda ridiculous, autokills all of the anklebiters...no need to actually close the holes with a heavy :/
there are several levels where I can get the required number of objects in less than the allowed number of cuts, but it forces me to make another cut (and thus lose) rather than just giving me the win. Lame.
The best strategy is just to poop at units as fast as you can, so you should automate that process rather than forcing me to doubleclick my guys constantly. Couple this with a pause menu to select which units should be reproducing: "highest armor", "highest damage", "highest range", "closest to enemy", etc.
I liked the auto speedup/slowdown feature, skips boring parts of the game (no others near) and allows extra focus on the exciting parts of the game (many others near)