Rushed as ever, sorry...
Pre Combat: Alchemy barrier, Below 1-8 on leading edge of barrier, Below 9-13 on rear side of barrier
Now: No barrier, hot smoke in the corridor, Below 13 fleeing, Harlequin drugged & attacking
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, dragging Spike out of the smoke, sees Frisk dispatch Tabor (technically in 1/3) and dodges her first blow (just)
Jackhammer carrying Natasha and the Doc and running (where exactly??? Forwards ‘into the unknown’ or back following Below 13?!?)
Below 13 legging it after throwing one last
gift at the family…
2/2
Isaint shoots burst at Below 13 (rolls?)
Frisk attacking Al (want to roll edge on those 4 defend hits???)
Al teamwork melee test to grapple Frisk
Alchemy
explosion on Spike and Al – treat as short range wide shotgun blast, if you take any damage you are drugged – although the flechettes don’t actually do any damage!
Jackhammer running (although Al and Isaint seem to want you to get in on the combat with Frisk…)
2/3 Isaint assensing and activating focus
2/4 Isaint charging Frisk (rolls?)
3/1 -- 3/2 -- 3/3 -- 3/4
Aisa kicks in -2D due to disorientation, hallucinations etc…