Complete the following tasks during the indicated mission to unlock the corresponding weapon.

Imperial Anti-Tank Lance
Kill the Enemy Ace in the 'Naggiar Plains' EX Hard skirmish mission. She is on a sniper tower equipped with an AT Lance.

Anti-Tank Flamer Attachment
Kill the Enemy Ace in the 'East Bank Of Vasel' EX Hard skirmish mission, located near the middle of the map in the center of the Imperial's central force.

Anti-Tank Sniper Rifle
Kill the Enemy Ace in the 'Marberry Shores' EX Hard skirmish mission. The ace is wearing Gallian attire in the small base separating the beach from the interior.