The game is no that difficult, but certain aspects make it so it is. The monke moves a little sluggishly, mostly because it seems to accelerate instead of having a fixed movement speed. The way the levels are made don't work really well the size of the monke since they get stuck on everything with ease.
Kind of wonder why LShift instead of W, since Space Bar is used for jumping, maybe even E would work easier, but that's fine.
Overall, good work!