Not a bad game, it does get rather addicting the more you get into it. But, I do have two major issues with the game...hence, my 2 star score:
First is the one-hit-and-you-die thing. That is just a total cop out in my opinion. I mean at least give us two hits, in the NES classic Ghosts n Goblins you had 2 hits before you died. The one-hit-and-you're-dead thing is really annoying; especially if you use a teleporter in a stage and you find yourself surrounded by baddies...you have no chance...unless you were lucky enough to get the Armor pickup, which brings me to my next issue...
The "upgrades"--or should I say the LACK of upgrades--I can understand the Invisibility and Invincibility pick-ups being random chest drops, but the only two upgrades that are worth anything and have any in game effect is the Coin Magnet and Four Leaf Clover. If you're going to give us an upgrades menu, make sure we can USE the upgrades after we buy them, and NOT have to rely on random chest drops.
I'd suggest make it so that you can USE the upgrades like the Meat Cleaver, Crossbow, Boots of Speed and so on in game once you buy them; and as you get higher ranks in them you get certain bonuses or buffs...and get rid of the one hit kill thing, at least give us two hits before we die.