Back in the day cg created the NBC thread on original. (https://elementscommunity.org/forum/general-discussion/(nearly)-no-bazaar-challenge) The thread collected various experiences players had in traversing their challenge
See relevant thread for details re challenge mode alts (https://etg.dek.im/forum/index.php?topic=1489)
I've spun up a hardcore alt, went with packs only, & then spent all my free packs on random element. Had 3 skele / 3 command in those packs, so made a command skele crapbow. Won a fog at one point, but lost that, & lost my chroma shield too. But my skeleton hoard has remained loyal so far

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(aside, Command Skeleton is pretty great CC)
57-17 gathered enough to fill out a duo in deck slot 2, won deflag in test drive

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(okay, wow, so much better not running skeletons)
monolife is easy since many green cards a good deck make

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skeleton deserted at 82-30

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A bug causing first card in deck to always be removed went unnoticed until I'd lost all my weapons & novas & lycans. Whim was MVP
By 200 games in I'm 156-44. Starting to get enough critical mass to escape Commoner. Bow is pretty stable, but started on some more decks

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monoaether, waiting for more pieces before I risk these cards

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MadameSophia_bitchensizzler
League: Spins-only; hard
Build your own: fire and light packs
200-26 vs. commoners (as of 2/17/24)
Excellent starting deck, super surprised at reliability of draws despite 5x immo and 4x non-quanta fodder. Fire spirit/ash (which can serve as fodder in a crunch), Fire mark, and Fire pillars help balance out some of the immo-fodder inconsistency.

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Chroma deck ends up being a very solid grinder vs. commoners.
A mono focused deck will eventually lose some of its core components and the random cards won won't be focused on your mono element. In other words, you'll lose your mono element cards faster than you can replenish them through wins. So a chroma grinder is more stable and you use the 'fodder' cards from wins, while also building up cards for your mono/focused decks.

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Septima_stubtoe_in_darkness
Roguelike: spins-only; self-found hard
Build your own: fire and light packs
25-5 vs. commoners
(https://i.imgur.com/qHPFLQmt.png)
Immophoton; had 5 photon, lost one very first game; photon/spirit/mirror for fodder; magma spark army

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25-5
(https://i.imgur.com/oOIKyWAt.png)
Immophoton. Surprisingly reliable draws with 4 photon in the past 29 games. If I was losing more, I'd have trouble replacing fire cards. So a strong start is needed in rogue like. Otherwise quick crash and burn.

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