This mission has a lot of bot launchers. Bot Launchers can be used both defensively and offensively. On their first use in each wave,they don't use any ammo. When you use one of them,your ship will be surrounded by 6 bots that can destroy any enemy and most projectiles that touch one of the bots. You could also launch all of the bots. It will shoot all of the bots you have left and it will also give you 6 new ones. I recommend using this weapon for this mission
