Updated, more or less…
Pre Combat: Alchemy barrier, Below 1-8 on leading edge of barrier, Below 9-13 on rear side of barrier
By Round 2: 1 foe standing (assuming Jackhammer doesn’t pound him down in rnd 1, or Tobbis does something nefarious…), group in a cloud of hot smoke
1/1
Below 1: Pepper attack
Below 2: Aisa attack
Below 3: Dopadrine attack
Below 4-8: 
Below 9: 2 ‘CS’ gas attack
Isaint: shoots Below 9
Al: shoots Below 2
Spike: bites Below 1
The Frenchman: shoots Below 10
Jackhammer: punches the barrier out of existence
Tobbis: 
Frisk / Tabor: Turning back to the fray, kill Below 4 & 5
Family [Richard, Rachel, Natasha, William]: gawp, then puke, claw at eyes etc…
Below 12-13 
Below 12 runs
Below 13 throws smoke grenade
1/2
Isaint: shoots (kills dead) Below 1
Al: shoots Below 3
Frenchman: shoots Below 11
Spike: mauls Below 8
1/3
Isaint shoots Below 6 (toast!)
1/4
Isaint shoots Below 7 (toast!)
Pepper / CS/ Dopadrine kick in! Likely min –1D to physical actions, possibly disorientation (-2D), possibly nausea (you’re screwed!), don’t forget the stun damage from pepper & CS
2/1
Isaint shoots at Below 13, misses (damn drugs/adept combat sense)…
Al sees Frisk dispatch Tabor (technically in 1/3) and can defend against her incoming attack…
Jackhammer carrying Natasha and the Doc
Below 13 legging it…
2/2
2/3
3/1
3/2
3/3
Aisa kicks in -2D due to disorientation, hallucinations etc…