civilian-grade helicopters actually do have bubbly-looking windows usually.
The thinning on the rail was a good idea but I'm not so sold on the connectors, gives it more of a sturdy appearance.

I'm still learning as a pixel artist but what I meant by a bubbly-looking cockpit was that it literally looked like a bubble was sitting on the helicopter. I cant explain it how I picture it but I tried to make it look as though the window part was more inset of the helicopter instead of protruding out of it.

Take it for what its worth to you but the bulkiness of the landing gear was really bothering me and I tried to mess with the shading around the door to make it less "bubbly"

Note: I am horrible at shading, it has never been my forte but I tried to edit the shape of the cockpit as well to make it less "Bubbly" as-well. Just a suggestion! Keep up the great work!

Looking again, second one might work for a sort of slow "dash towards" motion, creates a visual distinction AND gives the zombies a pattern to watch for.

Was looking at them and that's what I thought immediately after seeing them.

You could possibly use the first animation as a "wander" mode and the second as an "Aggro" mode. Just a thought but they both look great with the extended limp! Great work!

Walk and idle animation for new zombie enemy. As always, I highly value any feedback.

Sorry for the bad GIF quality.

The walk animation seems as though he is only taking steps forward with one leg and has a bit of a limp. If this is what you were going for then it's great!