FYI, the best way to post a post-mortem is with mortem tags. Like so (spoiler'd for bigness):
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DoomRL (v.0.9.9.3) roguelike post-mortem character dump
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John Romero, level 7 Cacodemon Sergeant Major, committed a stupid suicide
on level 10 of the Phobos base.
He survived 77068 turns and scored 32169 points.
He played for 1 hour, 49 minutes and 28 seconds.
He didn't like it too rough.
He killed 240 out of 265 hellspawn. (90%)
He held his right to remain violent.
He was an Angel of Haste!
He saved himself 2 times.
-- Special levels --------------------------------------------
Levels generated : 9
Levels visited : 5
Levels completed : 2
-- Awards ----------------------------------------------------
Hell Armorer Badge
Armorer Gold Badge
Runner Bronze Badge
-- Graveyard -------------------------------------------------
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-- Statistics ------------------------------------------------
Health 0/50 Experience 20732/7
ToHit Ranged +4 ToHit Melee +4 ToDmg Ranged +2 ToDmg Melee +2
-- Traits ----------------------------------------------------
Son of a bitch (Level 2)
Eagle Eye (Level 2)
Intuition (Level 2)
Triggerhappy (Level 1)
EE->EE->Int->Int->SoB->SoB->TH->
-- Equipment -------------------------------------------------
[a] [ Armor ] red armor [4/4] (76%)
[b] [ Weapon ] super shotgun (9d4)x3 [2/2]
[c] [ Boots ] tactical boots [1/1] (60%)
[d] [ Prepared ] high power Railgun (8d10) [26/26]
-- Inventory -------------------------------------------------
[a] modified chaingun (1d6)x6 [40/40] (F1)
[b] napalm launcher (7d7) [1/1]
[c] modified BFG 9000 (10d8) [130/130] (B1)
[d] Acid Spitter (10d10) [0/10]
[e] red armor [4/4] (50%)
[f] shotgun shell (x50)
[g] rocket (x8)
[h] rocket (x10)
[i] power cell (x50)
[j] power cell (x50)
[k] power cell (x50)
[l] power cell (x50)
[m] power cell (x50)
[n] power cell (x50)
[o] power cell (x50)
[p] power cell (x17)
[q] large med-pack
[r] large med-pack
[s] large med-pack
[t] large med-pack
[u] homing phase device
[v] thermonuclear bomb
-- Kills -----------------------------------------------------
44 former humans
38 former sergeants
13 former captains
32 imps
39 demons
35 lost souls
7 cacodemons
9 barons of hell
5 hell knights
12 arachnotrons
3 former commandos
1 pain elemental
1 mancubus
1 shambler
-- History ---------------------------------------------------
On level 2 he stormed the Chained Court.
On level 5 he entered Hell's Armory.
On level 5 he found the Acid Spitter!
On level 5 he assembled a tactical boots!
He destroyed the evil within and reaped the rewards!
On level 6 he ran for his life from acid!
On level 7 he ventured into the Halls of Carnage.
On level 9 he found the Railgun!
On level 9 he entered the Vaults.
He managed to scavenge a part of the Vaults treasures.
On level 10 he assembled a high power weapon!
On level 10 he entered the Vaults.
On level 10 he finally committed a stupid suicide.
-- Messages --------------------------------------------------
Fire -- Choose target...
You see : bloodstone
Boom!
You reload the napalm launcher with rocket.
You swap your weapon.
You swap your weapon.
You wear/wield : a super shotgun (9d4)x3 [2/2]
Argh!!! Lava!
Argh!!! Acid!
Argh!!! Lava!
The arachnotron fires! Boom! You are hit! Boom! You are hit! You are hit!
You dodge! You dodge! You are hit! You are hit! You dodge! The
arachnotron fires! You dodge! The missile hits the arachnotron. The missile
hits the arachnotron. The missile hits the arachnotron. Boom! You
dodge! The missile hits the arachnotron. Boom! You are hit! You are hit!
You are hit! You are hit! Argh!!! Lava! You die!... Press <Enter>...
-- General ---------------------------------------------------
Before him 114 brave souls have ventured into Phobos:
104 of those were killed.
And 6 couldn't handle the stress and committed a stupid suicide.
Some rumours though, say that the Cyberdemon was killed already!
Is he immortal? 4 souls claim to have killed him...
4 killed the bastard and survived.
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That said, I'm not sure what the bug is. Are you saying that you found a way to crack open one of the vaults by force? Because this is quite intentional and used to be the ONLY way into certain vaults.