Can 4 Stars Beat IS#4 Difficulty 15 Without Relics?

Rules:
I can't pick up any Relic, if I'm forced into it it's a reset.
All relics that Give squad and/or deploy limit are excepted and OK to use
Relics that give hope/ingots/life points are fine.
Runes that give combat buffs (HP+, ASPD+, Redep Time+) Are Banned.
This will be a long grind

[@Arthrexx]

How did you get and stay at 800+ ingots banked XD That's insanity.

[@Fesax69]

Little brother maast have helped out

[@tigerblade363]

Funny Mousse Thumbnail.

[@hoteny]

2:22:37 so mr boom isnt counted as combat item? i mean fine whatever i just forwarded the slider to the last 10 mins or so to see if you succeeded

[@maragazh9993]

What would an optimal, winning run look like? What stages do you get, what recruits do you get, encounters do you get, etc?

[@DrSilvergun]

ED2 with about 20 + lives
Avoid every 5th floor fight with removal
defender + 2 medics and roberta to stall boss, kill trash leak elites.

[@auxerre6172]

Yes.

[@NekousagiKorou]

are you asking me?

[@wildfire_]

the record should be least operators/E2s used.

[@maragazh9993]

Least hope used could be interesting too