This is a really cool demo! I saw your post on the Indie Facebook Group and really wanted to check it out. Here are my thoughts/feedback:
- The enemies were varied and thought they were used well, and the weapons worked really well.
- Sound design for the weapons was really good, and the audio cues for the enemies was also really good.
- I felt that the speed at which the character walks was a bit fast, as it made navigating the tight corridors within the middle section of the level, really tough.
- The level I thought was laid out well, but I feel in the first room that it was a bit chaotic, especially since I was trying to get to grips with the controls. I think re-changing the first room layout so that there is a clear path to the goal, and is a lot more open, will benefit greatly. Less debris and boxes will also help with creating more enjoyable rooms to fight in.
- Add some secrets, like the little jet-pack room. I instantly got Doom vibes playing the game, and having secrets within this very linear layout will help lift the game further, and add replay ability to the level.
- Add game play elements that incorporate the Jetpack, as once I got it, I never used it. I also found that trying to pick up the Jetpack caused my character to get stuck, just as a note.
Overall, I really enjoyed it! I like how you didn't use an objective marker, I was able to navigate the level really easily, so you absolutely nailed the linear nature of the level, but I would watch out for how you design the big fighting rooms, keep it simple so we don't get stuck whilst trying to fight the enemies. Great job!