Hells, Big Guy, there's no need to, you know, shout! Kalliste, well, shouts, ignoring the bit with the Silence spell (Labs's always been weird), as she scurries forward herself to join the melee. This could still be fun!

Spoiler: Attack.
Show

Jump if Labs needed that to get on the brown square (I can't remember what those were and can't seem to find it anywhere either): (1d20+10)[15]
Tumble (eat your heart out, reach!): (1d20+15)[24]

Attack: (1d20+8)[28] for (1d8+4)[8]

Ac's still 25.