What's the highest critical hit damage a level 1 character can do?

Question

What's the highest critical hit damage a level 1 character can do?

Rules:

• The character must be level 1
• The character cannot have any magical items
• The character's starting equipment must be affordable with the standard 15 gp start
• The character can be assisted by up to three other level 1 characters with the same restrictions
• The three assistant characters each have one round before the primary character makes their attack
• The damage must come off of one critical hit (i.e. the first hit of Flurry of Blows, not both)
• Max damage can be assumed
• Don't count persistent damage - theoretically any amount of persistent damage could be infinite if the enemy never manages to stop it somehow. Additionally, it's not part of the immediate damage of the critical.
• Characters can be assumed to know that this is going to happen; therefore, they can start with weapons and items drawn so long as they can properly hold them in their hands.

Answer 1

120, the party is as follows, a bard, 2 alchemists, and dwarven fighter

Builds for each class

Bard:

• Magic weapon spell
• Inspire courage Focus spell

Alchemists:

• Giant Centipede venom
• Energy mutagen (fire)[Uncommon]

Fighter

• Strength 18
• Dwarf ancestry feat vengeful hatred
• Class feat power attack,
• Greatpick w/ affixed Owlbear Claw token

Actions for each

Bard:

1. Cast magic weapon on the fighter's greatpick
2. Previous action requires 2 actions
3. Use inspire courage

Alchemist 1:

1. Draw giant centipede venom from bandoleer and apply it to the fighter's greatpick
2. Previous action requires 2 actions
3. draw an energy mutagen(fire) from bandoleer and pour it down the fighter's throat.

Alchemist 2:

1. Draw giant centipede venom from bandoleer and apply it to their own weapon
2. Previous action requires 2 actions
3. strike to apply stage 1 giant centipede venom to target

Fighter

1. Power attack on a valid vengeful hatred target
2. Previous action requires 2 actions
3. ??

Damage breakdown:

Greatpick does a d10 but has the fatal(d12) trait that changes the weapon dice to d12s on a crit and adds an extra d12 ~ 3d12

Power attack adds an extra damage dice (2 on a crit) ~5d12

Magic weapon adds an extra damage dice (2 on a crit) ~7d12

Giant centipede poison has a stage 1 poison damage of 1d6, a stage 2 venom damage of 1d8, and a stage 3 damage of (1d12) so assuming that the target critically fails the fort save and that they also failed the previous poisioning they advance from stage 1 to stage 3 ~ 7d12+1d12

18 strength add 4 damage or 8 on a crit ~8d12+8

Inspire courage adds +1 status bonus to damage or 2 on a a crit ~ 8d12+10

Energy Mutagen adds 1 point of fire damage or 2 on a crit ~8d12+12

Vengeful Hatred add damage equal to the weapon damage dice which is 6 ~8d12+18

Owlbear token grants critical specialization effects 1 hit hit when consumed which for a pick adds damage equal to the number of weapon dice which is 6 ~8d12+24

total

8x12+24 = 120 and stage 3 giant centipede venom

*feel free to edit for clarity*