- The web player is shit. Always provide a downloadable version.
- The reticle getting stuck on walls is awful, and it shouldn't clip into things.
- There seems to be some form of auto-aim when shooting at enemies on stairs, but it's not reliable. If you're planning on having levels with height variations, you'll need to let the player aim at different heights properly (and without walls interfering when shooting at things at the same height as you). Otherwise, just don't put enemies near stairs.