This game is just what you think; a cute girl in a bunny suit doing platforming in a dungeon. What you don't expect however is that it gets incredibly difficult really fast. Coupled with the large map, exciting music, and awesome visuals, this game is definitely worth the price, sale or not.
In terms of graphics, it's what pixel-based games should at least strive for. It's got depth, color, proportion, and detail; all things you'd see in 3D materials. Instead of going for realism, it aims for an eastern style similar to anime. While a turnoff for some, it's an interesting addition to the crazy details of other things in the area. The contrast between cute and girly and the detailed and fearsome monsters is easy to enjoy. There is one enemy who has two different appearances, one being a photo-realistic cat, and the other being a cartoony cat. You can choose the original or remastered versions in the options, with the photo-realistic cat being the original.
In terms of music, it's hit or miss. The original soundtrack is amazing, having what sounds like midi music rather than orchestrated, while the remastered music is orchestrated with little hints of the original. I personally did not like the remastered music, as the original definitely sounded better in the settings. Both soundtracks differ, but you are bound to like one or the other, maybe both and never neither.
Enemy variety is a bit lacking, as there's many reskinned pumpkin and clay zombie monsters. Likewise, there's two or three different colored turrets that shoot differently, and two spider tanks that do different attacks. Bosses have unique designs, and are pretty interesting. From a hot-headed fairy to a realistic cat, all the way to a girl with a pumpkin on her head. Let's not even talk about the nudist vampire with a revolver for a haircut, nor the tank you'd see in a bullet hell game. The bosses more than make up for the lack of fodder enemies.
The puzzles are surprisingly easy, but many times you will flip out trying to figure out what to do. The use of dash, wall jump, and time stopping are almost required to do some puzzles, and then there's puzzles that require timed jumps, pausing and reversing time multiple times, and my favorite one; bouncing off of enemy heads over a lake of blue fire to get to a door that seals if you take any damage in that room. There's even hidden blocks that you will likely not expect, so walk against every wall to find them!
Now we come to the bad aspects of the game.
Controls. While limited to movement, jumping, attacking, and time power, there is a combo system that lets you control which time power to use by simply changing how you move, provided you have the powerup. Healing and slow motion time are the most valuable powers, and turning into Dynamite Bunny is also handy. How can these be bad? Because you have to be facing where you want to go every time. You can't dash until you turn and face where you want to go, you can't jump on enemy heads when spin jumping, you have to make sure that you time your movements and turns, and so on. There's also an ability that lets you block all damage, even from those spike pits. Only problem is that it randomly works, and never when you want it to.
While I said it was a good aspect, some puzzles have "You are stupid" mechanics. There's a point where, to open a door, you have to place an item in a place you can't even see. In no way is it obvious, nor is there any hint of what to do. The worst puzzle is a hallway with an endless supply of invincible robot rabbits; you NEED to use a specific order of time abilities to prevent them from spawning, but as I pointed out in controls, it's incredibly difficult to do. If you have enough max health, you can just brute force your way through by dashing constantly after being hit, but that's definitely not the intended way.
Story. NOTHING makes any sense. Game is supposed to be nonsensical, but for the sake of completing a full review, I'll touch on it. You play as Bunny, a bunny girl who was cursed with cat ears. She goes with a fat rabbit to the game's dungeon, and has to defeat seven devils to get rid of her curse. Fun fact; there's only 6 bosses, and the last boss is entirely unrelated to Bunny's plight. I will avoid spoilers, so I won't reveal who the villain at the end is, but if you have earned all the time power ups, you outright cancel the entire game's story. Not exactly a spoiler since it unlocks another game mode, but I'll stop here. Haven't beaten the second story, and doubt I will. It's absolutely hard.
Overall, I'd give this game an 8/10. It has its flaws (CONTROLS CONTROLS CONTROLS), but disregarding them, the game is exceptionally fun. The difficulty is high, but not so much that a casual player couldn't beat it.
If you want a Metroidvania game, this is definitely something to look into.