First thing first, I only thought about the boss battle.

Boss-A Giant Trojan called the Dark Knight(TDK)
Look-
Armor-The armor should be like Arkus from the Silent Legion
Sword-pretty much a combuster except purple in the middle(this is just what the sword will look like).

Location-In the Shadow Lairs
Depth-???
Entrance-must defeat all the boss in all forms(as in the shadow lair one and the normal one).

Phase 1-Begins when you step on the button. TDK appears north of the button.
Ability-charge then a Troika charge with 2 explosions

Phase 2-Starts when he says, "More power." After he says that, he is, for the rest of the battle, outlined in purple aura.
Abilities-Still has the ability in phase 1. Stabs his sword into the ground causing a big black circle around him that is about 3 squares from him to the edge of the circle. Anyone in the circle looses 15 bars of health or less because of resistance. The circle generates after 3 seconds after he stabs his sword into the ground.

Final phase(a.k.a phase 3)-starts when he says, "Curse you, knights of the Spiral Order." And summons one trojan for each party member(if there is one person, one Trojan will be summoned,if 2 people, 2 trojans, and so on).The trojans have their reguar abilities except the charge is like TDK's except one explosion. TDK remains where he is when phase 3 started and casts explosions in random directions. After the trojan/Trojans are defeated, TDK Joins the battle again except fast movement speed, more dmg dealt, and turns around much faster.After he dies, he drops 1-5 tokens
Abilities-Still has abilities from phase 2 except the circle is one square bigger. Spins with is sword like the caliber charge except he can move around while spinning.Swings his sword at a 180 degrees angle and 3 explosions are generated in three directions.

Tokens are called Dark Energy

Items(all cost 50 tokens):
Dark Revenge-TDK's sword. Here is the fun part: when you trade tokens for the sword, the sword will receive one of the following charges:
1). You charge are the enemy, and slashes them, knock them back 2 squares
2). You stab your sword into the ground, creating a circle around you after 2 seconds, that is one of a brandish explosion apart from you to the edge.
3).You smash your sword into the ground 1 square in front of you and 2 explosions follow

*please give me a break if I have some grammar issues because I have ADHD. Feel free to add new stuff.