It's pretty obnoxious at moments where the tabs you need to hit are placed so close together that when you try to hit one, it registers the next one as a miss because you "hit it too early." I also occasionally have issues where it doesn't register me pressing the key.
The supply line AI seems to be a bit dumb or slow sometimes. If they're too far back in the supply line, they won't bring supplies. This results in the spot your currently working at having drastically reduced resources compared to what you see you have. Most importantly the survivors.
The only thing stopping me from giving this game a 5/5 is the utter lack of variety in enemies. Fighting is so uneventful when there's only some 7 different enemies.
Running training is botched. You can't jump when the duck is hopping around, and when you get to the higher levels, the logs come so fast that you are unable to jump before your duck decides to bloody stop.
It's just not that great... very little effort in the art. Gameplay is boring and basic. No special interesting things other than the mortars. The planes are retarded. You can't avoid being damaged by them no matter what. If you kill them, they crash into you and do damage, but if you let them fly by they drop a bomb. The storytelling is boring and the voice acting is (no offense) bad. The infantry are pointless as well. They do absolutely no damage whatsoever. Even in huge groups.
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