So many things wrong with this map. The first and biggest problem, you can jump through the barriers. You are basically invincible outside because the zombies don't even notice you. Second, you can 1-hit kill zombies with your knife until round 7. Third, the zombies sometimes won't even notice you even if you are inside the map. Fourth, it is very plain and basic. You literally use the same exact concrete texture for everything. Not a bad attempt for a first map but you should definitely spend much more time on your second one.