I finally got the new game and I'm loving it. I was knocking out the various gold badges but I decided to try for platinum on the arena--and won on my very first try! (In fact it was my first game in that mode).
There were a few spots where my health got dicey, but I finished with two medkits so I probably could have healed more aggressively. The main issue was just ammo--I used several (I think 3) of the early ammo station charges on gas grenades, which were helpful, but it meant I was in a tight spot for the last level. Fortunately, a gatling gun (with a barbed perk even) dropped on that final level, just when I was running low. I'd had the good sense to grab a stack of each ammo type and an extra stack of 7.62, so I was saved.
I went with a gunrunner build because I expected to be caught out in the open if I couldn't move fast (good call), and I grabbed two levels of Skilled as soon as I realized it was refilling my energy between waves. I got an AV2 assault rifle early on (I think from the crafting terminal on Europa) whose perk I rerolled into Molten 2, and a rail rifle from the first wave of CRI. I used almost all my multitools/charges on combat armor+helmet.
On the one hand I was expecting this to be harder (I didn't expect to get it first try). But on the other hand my weapon drops were ridiculously lucky. I get the feeling that when I'm ready for a diamond badge, this would be a good one for me to try first. Though the same build won't work on UV (I don't think Skilled 1 would get you two stealths per wave).
David, level 12 Scout,
cleared the entire Arena!
He survived for 3018 turns.
The run time was 1h 42m 46s.
World seed was 9998.
He scored 1821 points.
He liked it HARD!
He fought in the Arena.
Awards
Arena Bronze Badge
* Reach second stage in the Arena Trial
Arena Silver Badge
* Reach third stage in the Arena Trial
Arena Gold Badge
* Complete the Arena Trial
Arena Platinum Badge
* Complete Arena Trial Hard+
He killed 157 out of 157 enemies.
7 former grunts 4 fire fiends
6 corrupted grunts 4 ice fiends
4 former grenadiers 5 toxic fiends
1 corrupted grenadier 2 CalSec sentries
2 former soldiers 2 military sentries
7 corrupted soldiers 2 security bots
5 former CRI soldiers 3 reavers
6 former sergeants 4 cryoreavers
2 corrupted sergeants 5 toxic reavers
1 hellish sergeant 5 archreavers
1 former CRI sergeant 3 kerberi
1 former guard 1 cyberos
2 former commandoes 2 cryoberi
3 hellish commandoes 3 medusae
5 former CRI commandoes 7 archmedusae
1 corrupted heavy 8 ravagers
2 hellish heavies 2 armored ravagers
3 security drones 1 siege ravager
3 combat drones 3 CRI marines
2 military drones 2 CRI bots
6 fiends
Traits
Skilled L2
Dash L1
Hellrunner L3
Son of a Gun L1
Dodgemaster L2
GUNRUNNER L2
Trait order
Das->Hr->SoG->Hr->MGU->Dm->Skl->Skl->
MGU->Hr->Dm
Equipment
Slot #1 : 7.62 gatling
* Barbed 2
* Peacekeeper
* Spin-up
Slot #2 : AV2 9mm auto rifle P
* Ripper 1
* Molten 2
* Fresh Mag 3
Body : AV3 combat armor
* Auto-repair
* Fireproof
Head : AV3 combat helmet
* Health Monitor
* Sealed
Utility : AV2 utility AMP
* Camoboost
* Metabolic boost
Relic : - NONE -
Inventory
energy cell (x17)
12ga shell (x50)
7.62 ammo (x8)
40mm grenade (x12)
9mm ammo (x96)
small medkit (x2)