I've killed him with barbarian without wish for speed.
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Screenshot
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Meara St:54 Le:23 Wi:31 Dx:51 To:45 Ch:16 Ap:23 Ma:48 Pe:26 N=
DV/PV: 55/67 H:1176(1176) P:0(615) Exp: 50/37807837 ChAoS Sp: 156
Blessed Bloated Berserk
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Inventory
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Total weight: 14562 stones Carrying capacity: 20719 stones
He: blessed rustproof crown of regeneration [+0, +0] [55s]
Ne: blessed amulet of life saving [3s]
Bo: uncursed eternium plate mail (-1, -2) [+4, +16] [240s]
Gi: blessed girdle of giant strength [+3, +4] {St+12} [30s]
Cl: blessed cloak of protection [+0, +4] [20s]
RH: blessed Trident of the Red Rooster (+36, 6d12+18) [+12, +12] {Ma+24}
LH: -
RR: uncursed ring of the master cat [+0, +5] {Dx+16} (+16 spd) [1s]
LR: blessed ring of slaying (+6 melee damage, +6 missile damage) [1s]
Br: uncursed bracers of toughness [+0, +0] {To+6} [10s]
Ga: blessed thick gauntlets (-1, -2) [+0, +4] [15s]
Bo: blessed seven league boots [+1, +4] [30s]
MW: uncursed rustproof light crossbow of accuracy (+10, +1) [70s]
Mi: blessed quarrel of humanoid slaying (+4, 2d6+3) [4s]
Tl: uncursed everburning torch [+1, +0] [10s]
It was a powerful barbarian though.