the last upgrade is laser cannon.on easy it is priced at 12000
this is trueThe Dart Monkey...He throws darts... obviously, and if you are playing an updated BTD4, you also start with the Dartling Gun... not sure if it's called that. But if your asking for the FIRST TOWER YOU UNLOCK then it's the Tack Shooter.
laser gatling or plasma one of the two
there already is one go dartling gun
it is the last vehical upgrade. and you hold the right shoulder button.
Dart monkey Triple Shot, tack shooter Ring of Fire, boomerang thrower Lightsabre Thrower, bomb tower Moab Mauler, ice tower Artic Wind, mortar tower Mortar Battery, glue gunner Glue Splatter, monkey beacon Monkey Storm, monkey ace Operation Dart Storm, monkey buccaneer Battleship, monkey wizard Tempest Tornado, Super monkey Sun God, banana farm Research facility. Dartling Gun PINEAPPLE PLASMA SUN GOD.
I know one of them is Dartling Gun, but I don't know the other new one.
You upgrade the first machine gun.
you only can upgrade any weapon once
You can't
you cant upgrade it twice
It all depends on the model
once per gun.