Yo, I'm super happy with the game so far. I'm a huge Metal Gear fan and even tried my hand at a similar project a couple of years ago, so I'm super grateful for the effort. I know how hard it can be to develop single handedly, so with that in mind and having read your devlog, here are a number of suggestions.
- Add a slight stun/stagger effect to the melee attack, it's what made the movie viable in the OG game. As it is here, there really isn't a point since you're pretty much guaranteed to take a hit if you try to melee.
- This might just be me, but I'd probably classify Stealth Camouflage as an Equipment item rather than a weapon, seeing as that's the case for the Solid games.
- I know you're working with a limited animation library and I know some animation packs can be pricey, but maybe swap out the current dash animation for something more so resembling the dive from MGSV. I interpret the moves' utility to be the same.
- Maybe apply some kind of graphical indication of a grenades arc before the player tosses it to avoid accidental death via grenade.
- I'd as well say that however much indication you can give the player as to the guard's situational awareness, the better, Something like their vision cone on the mini-map ala the Soliton radar or some way to tell if the player's footsteps can be heard at what distance I think would be a good idea.
That's all I really have for now. Aside from the general obvious stuff like further polish, optimization, and the save feature I know you're working towards. All I could really add at this point is; as a fanboy of MGS it would be more rewarding to have a plot more so resembling the MSX version rather than the NES port. I'm not sure if you're doing the latter to avoid legal trouble (which is understandable, although I think Konami have the rights to both plots), or for a personal preference. As far as providing the definitive edition of Metal Gear 1, I'd be nice to at least have the original version's plot more so represented. That goes for character designs to, although, again I understand the limitations of Unreal's asset library.
I'm still playing through the game and having fun so, keep it up! Thanks.