Overall, this hack isn't bad. The design is good, it manages to be fun to play mainly for the variety. Even if it's not a very big hack (4 exits only), it's worth a shot.
Aesthetic-wise, the author uses custom ExGFX, together with some weird Map16 assembling of vanilla tiles. It's not bad looking, but sometimes the levels feel a bit too empty.
As only issue worth of mention, music breaks on accurate emulators.