I really like the story and idea for the game! That was a very creative take and great setting for this theme. The save/load was a really nice addition as well!
I think the button scheme was off for the quest as I had to press X and not A.
I liked the motivation and story for the shooting part, but the Trenches shooting could be improved upon in the future for a more immersive shooter. It was hard to find enemies and I just ran around until I got lost a lot.
Very well done!