Bow Adventure Superb
One of the best flash games ive ever played. Like a cross between Contra and Abuse. I think it deserves a much higher score than it has right now but I guess alot of people dont like the difficulty level.
Gameplay is close to perfect, nonvariable jumpheight is the only issue I find worth mentioning. Thankfully the game usually avoids situations which would have you cursing the lack of it. Random bats and archer placements sometimes made for near impossible situations but they do help in making a runthrough different each time so I guess its a tradeoff. Hit detection is as far as I can tell excellent and I only encountered one minor glitch with a downwards moving block.
More variation in music and more detailed graphics would be nice of course. But those are very minor points compared to gameplay, which is what makes this game better than the vast majority.