Thanks for playing!
I will try to fix resizing messing with the map, good catch.
Regarding menu clarity, I'll try to simplify the aiming process itself so that should already address some of the confusion, but I might also visually highlight the currently in-use menu, that should help too.
And yes the map is really linear since it's the game's first area, but hopefully it will feel considerably less linear once land gameplay is implemented.
Thanks for the feedback!