not only with your tiles but also with your themes. looking at this map again the rockets are nice but the chain gun directly interferes with the right most rocket making for bad game play. make sure to keep enemies from clashing rather try to make them work together so that the ninja is always under pressure without being over targeted. it takes a lot of effort to make a solid map. sometimes ill make a map and n come back to it the next day and play test it. this helps with making the map more enjoyable. hopefully this helped. good luck :D

your maps certainty have solid ideas behind them but they are lacking in themes and well constructed tiles. take this map for example. you keep the rocket theme and add some other enemies for flavor but the tiles are very poor. the map looks like you made it in 5 mins and because of the tiles game play suffers. Try to playtest your maps more so you can get a feel for how they play and change them accordingly. it sounds cliche but look at others maps for inspiration