I just played this and I love it! I'm a big fan of the Army Men series. I definitely understand some stuff getting cut for time, I had that problem as well. I really like what you have so far. Some things I would fix / update:
- A lot of the sounds are all at the same volume / all sound like they're playing in my head, so when an enemy reloads I sometimes think I somehow reloaded and find that my ammo counter is still empty.
- Supply caches you open don't give you much visual feedback so I wasn't certain if they had done anything or if they were going to spawn a pickup.
- Having your character wiggling so violently in the over-the-shoulder cam makes it really hard to focus my aim, however entertaining it might be.
Other than that, I liked collecting the green gems even though I have no idea what they did or what the blue meter was for. They reminded me of lego rock raiders.
I'm glad to have another tiny perspective entrant in the jam, an Army Men style game is something that I wanted to make some day eventually so if you ever want to collaborate let me know. :) I hope you keep working on this.