Here is a guide on how to find the secret items, enemies and locations in Minoria game.
Frigid Incense (passive) – unique Incense that adds ice element to your attacks, basically increases damage by quite nice margin.
Clairemont (sword) – same yech/style as the staring sword, base attack is +25%
Sea Incense (03) – explosion-like magic blast.
Dirty Incense (passive) – inflicts 40% more stun on enemy.
WITCH OF LUST
Blood Crescent Incense (passive) – an upgraded version of Crescent Incense.
Calming Sea Incense (02) – protective barrier against one attack.
Witch Princess Incense (02) – consumes 50% of HP to release a stream of energy.
Square Incense (05) – pew-pew.
This particular room has a low chance to spawn rare enemy – Red Skeleton.