I struggled against this challenge for so long, after banging my head against it for so long I finally managed to squeak past it this time!
I had settled on Entrenchment for my build for this since it's what got me the furthest in before now, always picking the Gatling and opening with all three levels of Whizkid to get Loading Feed and Efficient, then the prerequisites for MEN, after that working on Toxicologist.
Some notes:
1) I like this Mastery generally. :)
1a) Someone mentioned using multi-shell-per-shot Shotguns like the Plasma, Dual or Frag with this Master due to the ammo cost reduction. While it did work even at level one, the gun wouldn't fire with 1 Shell left. Maybe I could get 3 shots out of one with Second Chamber depending on how it works but it didn't work alone.
2) This challenge is a real pain in general...
3) Since I got an EMP Mod, I decided to skip Infernal Lock and go to Black Site instead, even without spare keycards. Worked out fine except I went to the wrong vault. Whoops.
4) I had some real close calls with getting my Armor destroyed and running out of healing in Beyond L1. I managed to get new armor and find just enough healing to survive but still never had a surplus of medkits again. :(
5) Toxicologist was really helpful in places, even without Wizard!
Crash Gordon, level 13 Technician, defeated
The Summoner against all odds.
He survived for 6055 turns.
The run time was 1h 0m 55s.
He scored 4077 points.
He took MEDIUM risks.
He was an Angel of Hubris!
IO L3 -> Io Black Site L1
Io Black Site L1 - Exalted Summons
Io Black Site L2 -> Black Site Vaults
Black Site Vaults - cleared
BEYOND L2 -> Limbo
Limbo - cleared
BEYOND L3 - Exalted Summons
Awards
Medal of Prejudice (+200)
* Won with 100% kills
Untouchable Ribbon (+50)
* Won taking less than 1000 damage
Hubristic Silver Badge
* Complete Angel of Hubris (AoH)
He killed 227 out of 227 enemies.
4 CRI bots
33 archreavers
6 hellish soldiers
11 ravagers
21 turrets
3 exalted kerbeross
6 exalted fiends
1 former CRI grunt
25 reavers
9 fire fiends
2 hellish sergeants
3 former CRI commandos
3 cybeross
4 military drones
11 rocket turrets
6 hellish commandos
3 exalted ravagers
2 military sentrys
1 Summoner
12 CRI marines
5 toxic fiends
5 kerbeross
6 former CRI soldiers
4 former CRI sergeants
15 toxic reavers
8 armored ravagers
6 siege ravagers
9 exalted reavers
7 plasma ravagers
6 CRI guards
Traits
Whizkid L3
Powerjack L1
Cover Master L2
Sustained fire L1
Toxicologist L3
ENTRENCHMENT L2
Trait order
Whk->Whk->Whk->Cov->Cov->SF->MEN->Pow->
Tox->MEN->Tox->Tox
Equipment
Slot #1 : 7.62 gatling BE
* Efficient
* Disruptive 3
* Peacekeeper
* Spin-up
Slot #2 : AV1 plasma shotgun
* Autoloader
Slot #3 : AV3 12ga auto-shotgun
* Calibrated 2
* Sustain
Body : AV2 combat armor B
* Durable
* Auto-med 10
* Loading feed
Head : blast helmet B
* Durable
* Blast shield
Utility : AV2 utility AMP
* Powerful
* Metabolic boost
Inventory
energy cell (x100)
7.62 ammo (x100)
7.62 ammo (x100)
7.62 ammo (x100)
7.62 ammo (x75)
EMP grenade (x3)
EMP grenade (x2)
CRI phase kit (x1)
multitool (x3)