LittleEcho12. 14 works, you just got to figure it out. HINT: You need to use all pieces and the steam will need to end up on the line with the water thing on it.
18: Summon Angels, Titans and Dragons and nothing else once the lord of hell spawns. The angels may heal him slightly but at the end I had 3 angels, 5 Titans and 5 Dragons attacking the lord of hell. The angels kept the area clear so nothing hit me.
Dropped him in about 20 minutes using elf.
For 16 to kill Guah-Haji i used elf. I kept calling Titan units and Angels. I also called a few ranged units after each big unit (BUT NOT MANY). 17 (THE END BOSS) was easy, same thing with ORCS, titan and angel units with a few ranged.