Easy "80% of the time, I hit e...
	Various Trophies...

Using fast firing weapons (machine guns, mechs, etc.) at big targets is really helpful. You'll probably want some teammates to take care of smaller targets while you unload as much ammo as possible into big ones (like bug tanks). I did a mission where you have to kill a number of enemies and at the end I had ~1500 bullets fired with 81% accuracy. If you have other teammates helping and knowing what you're doing it should be easier, though.

Complete the following tasks to unlock Vita trophy rewards.

Trophy	How to unlock
80% of the time, I hit every time (Silver)	Complete a mission with over 300 shots fired and 80% accuracy or better.
A molehill of corpses (Silver)	Kill 10,000 enemies.
A shining inspiration to us all! (Gold)	Achieve the rank of Grand Lord (Rank 25).
Back in time for tea (Silver)	Complete a difficulty 4 or higher mission in 5 minutes or less.
Brothers in Arms (Bronze)	Join another game through the matchmaking system.
Dancing Queen (Bronze)	Do 25 capespins in a row, without moving, while on the ship bridge.
Defender of Humanity (Silver)	Take part in a successful defence of a capital city by completing at least one mission.
Don't you just hate escort missions? (Silver)	Successfully complete an escort objective where all 4 NPCs survive.
Hell dive (Gold)	Complete a difficulty 10 or higher mission without a single death.
It's raining Hell, hallelujah! (Silver)	Complete a mission using only Stratagems.
Join the Army they said (Bronze)	Complete a mission.
Liberating the countryside (Silver)	Complete all missions on a planet with difficulty 10 or higher.
Making mountains out of molehills (Gold)	Kill 100,000 enemies.
Meet interesting people they said (Bronze)	Play at least once against all enemy races.
Never give up, never surrender (Silver)	Use the Reinforce Stratagem while downed and the last Helldiver alive on a difficulty 8 or higher mission with 4 players.
Next time we meet, I'll probably have to salute you (Silver)	Achieve the rank of Captain (Rank 13).
No man left behind (Silver)	Extract from a difficulty 8 or higher mission with 4 players where all 4 gets on the shuttle.
Now that is what I would call a multi-kill! (Silver)	Kill 7 enemies within a very short time using only your primary weapon.
Peace and prosperity reigns again (Gold)	Complete at least one planet in a successful Galactic Campaign.
Royal Roadkill (Gold)	Kill a Bug or Illuminate assassination target by running it over with the APC or HAV.
See the Galaxy they said (Bronze)	Play at least once on a desert, a forest, and a snow planet.
Solid Stealth Execution (Silver)	Complete a difficulty 7 or higher mission without triggering any alarms.
Spreading Managed Democracy (Silver)	Take part in a successful final assault on an enemy's home planet by completing at least one mission.
That which doesn't kill you, scars you for life (Bronze)	Finish the Training.
The Helldiver's new clothes (Bronze)	Customize your character.
The element of Supplies (Silver)	Kill a Bug Tank with a Resupply stratagem Hellpod.
The epitome of Super Earth (Platinum)	Complete all Trophies.
They call me Mr. Danmaku (Silver)	Complete a difficulty 7 or higher mission against the Cyborgs without taking damage from any enemy.
When the wrong tools do the job, are they still wrong? (Bronze)	Destroy a Bug Nest, Cyborg AA, or Illuminate Beacon with anything but the NUX-223 Hellbomb.
Which seat can I take? (Bronze)	In a 4 player game, on a Friday, have all players sitting in an APC or HAV at the same time.
You're it until you die or I find someone better (Bronze)	Achieve the rank of Sergeant (Rank 7).