Great game! Perhaps a bit underrated. Tips for hard badge: Don't keep doing huge jumps for the speed bonus, it doesn't work unless you are stupidly lucky. You can control how far you jump by how long you hold down the esc key, it took me 15 mins to see that. Look ahead and try to plan your route, this comes with practice really, the laser moves so fast at 300+ you have to rely on reflexes.
answering some comments... The launch system is weird, you have to try and get the bar exactly in the middle for both bits.
Get the gold trolley before the dumpster, it's better. Hard badge, chain a load of different tricks, end with a hang glider, make sure you hold the last key. Medium badges require fully upgraded dumpster (for worm) and gold trolley (for monkey). To kill them, bat the bombs at the bosses, you can also bat the bananas the monkey throws back at him. Easiest way is just spamming the bat, so you don't get hit.
I'm enjoying this game but at 50+ it gets really tough. I'm spending most of my time guessing the word rather than working out the shape. One of the hardest hard badges to do legitimately.
by the way everyone arrow key bug is CHROME not the game (it's broken in loads of games, google releasing a patch later this week) use a different browser