Anyone wanna challenge me to a game

Finish the whole game within 24 hours! There's a challenge.

a single day not 24 hours divided over several days

Finish the game without using any input device other than the power of your mind.

You should consider making a topic in the Heroes series forum, too. It gets less traffic than General Discussion, but you'll be more likely to get useful responses there (even though you still might have to wait awhile for them).

Good point, within a day of course!

And not just any day, but your birthday! Yeah!

You might also try one of the Heroes discussion boards on Steam, or see if there's a Heroes of M&M reddit page.

Finish the game using only Tier 1 creatures...

You'd be surprised how easy that is with the Necromancer faction and a good spell-casting hero .