Useful Abilities of Challenges

Different challenges can be pretty well, challenging.
I heavily suggest doing some of the easier challenges when you get a foot hold into your main game and understand the basics of the game.

If you have 4 hours to spare, you can get some good bonuses for Prestige and BLC.
Try the Speedblower Prestige% online Combo first, this is about a 10 minutes worth of work, just rush straight to unlocking gold leaves and unlock the leaf portal for a quick 25% bonus to BLC.

Speedblower Prestige% online and just Speedblower Prestige% are practically the same, you can do both in about 20 minutes.
The simplest way to do this is focus on fruits and remember that there is a gold fruit upgrade at the bottom of golden leaves.

Speedblower BLC% online combo, I suggest stopping these types of challenges after this one. This challenge may take about 2 hours and 30 minutes. All I can suggest with this challenge is remember the powers of combo and take your time as this will give a 2500% bonus to BLC afterwards.

With this knowledge I wish you luck on future leaf blowing adventures.

[Atomicbean]

While many of the challenges take quite a while to do... considering how long your average idle game is, and LBR is definitely no exception, it's extremely highly worthwhile to do all of them as soon as you know how to - And don't be afraid to spam reset the bingo++ one that requires completing the entire board until it doesn't require anything after the leaf tower, or if you have the patience, only requires stuff prior to the leaf tower (it's possible... just rare.)

Some of these are WAY stronger than you'd expect, like the obsidian one and the global trade multipliers from the bingos. Additionally, EVERY challenge you complete gives you a flat +all leaves bonus from buying stuff for your house - So they're even stronger than just the listed reward, and some of the house stuff gives additional bonuses, and this also tends to off-set the length of the longer and more difficult challenges.

[Ground Cinnamon]

This was very useful! Thank you.

[Cordell]

With a shovel and a bit of luck, I got the speedblower BLC% online in about an hour and a half, so it's not that bad.