This game is very long, and consists mainly of three things: Moving obstacles, traps and low-difficulty needle. As you could guess, the low-difficulty needle is easy, consisting mainly of diagonals, with a fair save placement. The traps can be of two kinds: Obstacle ones, and puzzle ones. Both consist of flying spikes, so don't get your hopes up. The obstacle ones are your usual everyday traps, and they often appear in big groups. The puzzle ones aren't as common, but are far harder to avoid. The puzzle is to find a way to dodge them (Which sometimes involves frame-skipping spikes). Most of them are insanely fast, and very-hard-to-impossible to dodge without prediction. In other words, you're going to die. Don't even bother with trying to dodge at the first time.
The moving obstacles (Cherries and spikes. As I said, don't get your hopes up) can be the most insane part of the game sometimes. One particular screen also involves frame-skipping, but not once like in the puzzle traps, but walk through a field of moving obstacles by finding the frame-skipping spots and using them until you can get to the next save.
The difficulty curve is confusing as hell, the horrible saves can be anywhere near the easy ones. The visuals aren't that good either (Most of them are just the usual old tilesets). Level design is a hit-or-miss, can be creative or just unbearable.
If you're ready for a long journey of suffering, I recommend...Another game, maybe Singularity or something. Justice, perhaps. Do a favor to your sanity and don't try this one.