What exactly does it take for a flag to appear after killing an enemy? When killing a bird the flag will sometimes appear in a spot you can't reach. Perhaps flags should drop until they reach a platform? I would be fine for it to stay as it is it's just a bit frustrating to see a flag you can't collect :)...

Don't get me wrong, it's great, but it's not exactly a beat em up...

Is it me or when going up a ladder and then pressing down will sometimes make you go up the ladder instead of down.

This game is honestly extremely fun. I'm currently working on getting all the achievements, but I do have to say it'd be even better if we had an Endless/Endurance mode where the levels loop for us to see how long we can go for, maybe having them randomized after the boss is beat the first time. ...

It may be nicer to have a separate highscore for each difficulty/mode. Local/Steam leaderboards (Easy/Hard and Best Time optionally) would be fun as well.