Turns out, any boss fight ignores Hawk eye.
Nay, don't have seed. Extra damage is reasonable yet never mentioned. Say, showing "x2 damage" on map screen in tooltip should be enough.
Also, reviving one (or more) of boss modifiers would be great. Say, one for free and more for extra relics\artifacts. This'll make bigger maps more reasonable.
It's not just weighting. It's "chain reaction"=1, "extra bombs"=2, "chain reaction"+"extra bombs"=5. Because it takes a lot of preparations ore one big chunk of luck to survive this combination.