TL;DR:
>They acknowledge that calling it a remake instead of a remaster wouldn't be an exaggeration considering the amount of work put into it
>Improved graphics, capable of running at 4K/60FPS.
>Quality-of-life improvements like:
- Being to move while aiming
- A blue durability meter below a weapon you're carrying
- Making Frank's movement more intuitive and finetuning the user interface
- Multiple save slots carried over from 2016 version
- Autosave due to popular demand
- Fast forward feature when looking at your watch. From what was shown, it appears you can pass half an hour in 2-3 seconds with it.
>Improved NPC behavior and THERE'S STAIRS AT THE FUCKING VENT, THANK GOD.
>Core gameplay remains intact and the team did their best to respect the original direction and keep the fundamentals, while improving the experience for modern audiences.
>Team believes that newcomers and veterans alike will enjoy the fresh experience, while newcomers can experience the same shock from when the original was released.
>Team were able to accomplish a lot of what they couldn't 18 years ago due to technological limitations.
>Real-time lighting and shadow effects that changes depending on the time of day.
>For character animations, tried to limit as much unnecessary changes and use the original data as much as possible, especially during action scenes.
>Decided to preserve the unique and comical movement instead of making it more realistic, saying that it's what made the game special.