Demons hall of fame

This is a sub-location where the player can attempt timed challenges in order to get rewards. The hall of fame is unlocked by a contract costing 1,000 demon prestige.
Beginning a challenge causes a game restart, like a boiler-explosion reset, but without award of prestige or waste.
=== Challenge 1 ===
Activate energy crystal 1 within 65 seconds. Rewards 3 batteries and 230 demon prestige; crystal activation costs 100x less gems. This challenge can be repeated for extra rewards up to 4 times. You have to activate crystal 2 in the first repeat, crystal 3 in the second repeat and so on.
=== Challenge 2 ===
Blow up a boiler within 120 seconds. Rewards 15 tokens and 350 demon prestige; 50% more waste from boiler resets. The boiler explosion in the challenge does not restart the game. Recycling gems for waste adds 3 seconds to the allowed time per recyling.
=== Challenge 3 ===
Hire a drowner within 180 seconds. Rewards 650 demon prestige and the ability to buy stuff in batches of 25 per button press.
=== Challenge 4 ===
Hire Azazel within 1000 seconds. Rewards 950 demon prestige and unlocks further challenges. The rules for hiring demons are all mutated:
* no more than 3 of each unit can be hired;
* activating any crystal multiplies the number of demons at work by 100;
* crystal 4 gives gems, not souls;
* only 1 of a unit is needed to hire the unit of next highest rank.