Battle, by 
Very good level! I don’t know,how do you remember construction of JJ1 Battleship.
An idea with powerups instead Gun-crates is really nice,almost like ammo-orbs from JJ1
But to the battle this level is little bad. You could make your own Battleship in Single Player type. When I’ll make Episode Six,I’ll do it definitely.
Music is good,you choose good Battleships remix,based on orginal Song15.s3m(Battleships)
Tileset,well you choose nice set,but why always everyone make so slow animation in each level. Faster animations are more effective,ex:25-30 fps.
On like-boss in the end of Battleships level I advise put a Tweedle Boss and near him put Activate Boss event.
When you destroy Tweedle(he’s invisible)you could put destroy scenery on wall and behind it finally put End Area event. I know this is little stupid idea,but I’ll rather use it.
OK,I think you worked hard on this level,because is little tiring to make an ideal copy of JJ1 Battleship.From my all positive comments,I’ll give you 8.0 rate.