DUDE! Give him some credit. It's not bad. 3/5!

excuse me? you may think that the map is bad, but that is no excuse for personal insults. i made one like this on my first map. also, one mere rating cannot crush a person's potential, unless they decide to stop making maps or something just because of a rate. this is an average first map, and we just need to give him the usual advice to improve.
speaking of which: 1. don't spam objects (gold specifically). put gold in places where it is challenging, yet fun to reach. if you want a hectic feel, put an enemy nearby the gold so that the ninja has to get the gold quickly. put as little gold and as few enemies as possible, but make them both efficient.
2. don't make tunnel mazes. they don't have potential. you can't put down enemies that will have harrowing close calls if you just have 1-tile high tunnels to move around in. make much more open maps.
3. get a good tileset. for the first time around, you might try borrowing an unused tileset from someone, just type "tileset" in the search, and use one. credit them tho. the object is to have both an aesthetically pleasing tileset and hectic and fun gameplay.
4. don't hide things under gold
that's all i can think of :(

a lot of gold you cant get, and two chain guns isnt exactly fun, I'd like to see you get through this although it isnt that hard if you go up first. NR, if i did, it would crush your mapmaking potential, if you ever had any.