Gameplay balancing was very difficult due to the limited amount of time i had to test the gameplay before the release...of course something changed patch after patch and in general the game is much more helpfull if we talk about lot, but in general i watched streams and youtube gameplays and a lot of gamers just did not explore enouth the levels, so maybe you did not find enouth ammo because you did not check every corner of the game?
Besides that, you're right about the flickering of the lighs so i changed ALL the lights of the game and how the light embedded to the gun works and i think the problem is solved. Also, mesh clipping should be fixed too.
Don't worry :) this game will get a lot better after the game jam, i promise!