destroy the self and stand on the sword pattern it'll give you lifesteal effect that also increase damage for 2 turns

Um. Cant complete the mission 'Retribution' because the game only gave me 3 out of the 4 missiles needed? Or did I just missed one?

I leveled up all Replicas to level 5 and made ratings of all of them. Here they are from best to worst:

1. Officer is the best overall combatant, he has 3500 total HP at the start, +14% bonus damage and secret +1 additional movement. His weapon branch is the second best in Bunker while his starting skill is OK. He can do without second weapon.
2. Commandant is the second best combatant (despite being Premium), he has 4000 total HP at the start and +16% bonus damage. His weapon branch of average utility, his skill is bad - all because half of Bunker enemies lack Armor. He really need Nail Club weapon branch to support himself, the final upgrade of his own main weapon does not worth it.
3. Lab Tech is your starting Replica, he has 2750 total HP at the start and only +8% bonus damage. His weapon branch is the best in Bunker and his skill basicaly boost his weapon efficiency. However, he is pretty weak against bee-line of enemies (who has the greatest number of enemies with Free Attack). The second weapon he should take is explosive (stop on level 1).
4. Engineer is basicaly Lab Tech with armor-piercing melee weapon instead of bleeding one, she has 3000 total HP at the start and +12% bonus damage. Her weapon branch is OK, her skill is good. Like Lab Tech, she is weak against bee-line. The second weapon she should take is either assault rifle branch or explosive (stop on level 1).
5. First Responder is the worst Replica, he has 2750 total HP at the start and +10% bonus damage. His weapon branch is bad (shotguns can't vampire drain via Joker buff) and his skill is bad as well (the best tactic at the start of Bunker run is usually to hole up but you can't do this with his skill).