Archdemon: How to deal 1B damage

Presentation

The Archdemon is found at the end of any chapter of the event
You can fight him as much as you want, but you need to restart and complete a chapter every time
The buffs you buy from the workshop also count for this fight
You get a chapter-specific damage multiplier (10% - 100%): the higher the chapter, the higher the bonus

How to replicate

Use exactly the same setup as indicated: relic, heroes, colors, wealth buff (number of coins). The slightest change will ruin your try

There is a small margin of error on the wealth buff. Probably by 10's (700-709, ...). Start higher, go down by spending three at a time.

Colors matter, not levels: 1/7 and 2/7 are the same (violet). 3/7 to 6/7 are the same (orange). Exact same power level.

The chapter does not matter: it only provides an end bonus

Getting enough coins

Lose twice near the end to get more coins with the wealth talisman

Buy your heroes as late as possible, but pin cards on the way

Buy random cards and sell back those not needed. Keep temporary heroes to reach the boss

Teams

III	750M	100 buffs	n/a?	◲⧉	Frosty
I	998M	100 buffs	834~ coins	◲⧉
I	3000M	150 buffs	836~ coins	◲⧉	Trade Boy
IV	5600M	150 buffs	881~ coins	◲⧉
IV	3100M	200 buffs	853~ coins	◲⧉Boss reached with astrid-byrna-neb-guus, undeveloped	Ganji
III	4800M	200 buffs	912~ coins	◲⧉	Trade Boy
I	5000M	200 buffs	969~ coins	◲⧉	Trade Boy
I	9200M	200 buffs	1097~ coins	◲⧉	GenKong577, Gabriel
I	7400M	240 buffs	1016~ coins	◲⧉	Ganji
IV	9800M	240 buffs	928~ coins	◲⧉	Ganji
VII	14700M	250 buffs	908~ coins	◲⧉	Ganji
VII	24500M	250 buffs	948~ coins	◲⧉	Ganji
VII	24000M	400 buffs	990~ coins	◲⧉	Olympus