Some suggestions:
I couldn't aim the throwing axe so I just use it as a melee weapon instead.
Also I think there can be a wait button (I just hit the wall to wait and misaimed the throwing axe T-T).
Spear weapon to pierce/hit diagonally may be nice.
Knockback weapons such as shields may make use of the trap/floor mechanism.
More scrolls, such as ice/freeze, vine/immobilize, thunder/chain, slow, stun, blind.
Enemies: fast/charge type (2 move), tank type (defense), stealth/ambush type, ranged type