Jetstream Sam DLC - Armstrong No Damage (Hard) - You’re Hired Achievement

Go here for a full guide and walkthrough of this game and DLC: You can follow the strategy *exactly* as it is till the part where he has 62.2% of health. From then onwards, his moves and pattern will be randomized (to some extents) and you’ll have to proceed more carefully with a tactic similar to the one shown in this video. This is another approach (on Revengeance difficulty): Playli