Making a platformer in a week? You ambitious mad person you.
Overall it works pretty well! The platforming feels alright, wall jumping functions and the level design isn't overly harsh.
Sound balance is a major issue in this game, the first time I cleared a stage it near destroyed my ears.
Jumping is a little floaty, took some getting used to.
Wall-jumping is particularly strange, but once I got used to it it complimented the gameplay quite well I felt.
Graphics are a little simple, but it didn't obstruct gameplay in any major way (though it was sorta difficult to tell that the health pickups were indeed health..).
Nice work