Combat initiation (No sword / only two weapons / X rank) Rocketeer's destruction.

Another no sword challenge...
But more difficult than previous one.
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Tips:
How to beat the run with only rocket launcher and time bomb?
Stage 1 :
try first clear mele enemies, then deal with projectile enemies.
Use rocket launcher wisely, use more time bomb when all mele players are in one group.
Boss :
At Jason best way to deal is make Super reaction to deal a lot damages (only 5 needs if you correctly doing).
Stage 2 :
Get fast heal gear or mobilities gears
Use Bazooka and firstly clear all projectile enemies, then end all mele enemies ( including giant)
Boss : Bigger space - harder to deal with Captain. Best to defeat him is go the huge base's hall and try the same way with Jason strategy (Super reaction).
Stage 3 : similar with Stage 2, first clear projectile enemies, then mele enemies.
Only 5 or 4 missiles to defeat boss version of cannon's green box, 2-3 to non-boss version's green box.
Fighting with Vagabond, best way to dodge is using bazooka's jump boost, sometimes try aim the boss, use Super reaction to deal mass damage.
Counters / Encounters:
Stage 1 : Counters : Noob, bobby. Encounters : Gunman, Jason.
Stage 2 : Counters : Noob bobby, giant, emerald blaster, gunman. Encounters : Troop, Captain.
Stage 3 : Counters : Noob, bobby, giant, killbot, emerald blaster, gunman, marker. Encounters : Troop, Cannon, Vagabond.
It's possible get X rank if you have healing items or good for mobility (unless you know another strategy).
Best way to practicing is Sandbox mode.
Thank you so much for patience of reading!
I hope it's useful! :D