You would think the level times would be loaded into the sol like ching chong, but no such luck.

deity, you are great. Here are AoBs most of people are used to
Change 2c 94 0e (Withered Away, die) for:
2c 96 0e (Bridging the Gap)
2c 98 0e (Naturally Talented)
2c 9a 0e (Logically Delicious)
2c 9c 0e (Master of Mysteries)
2c 9d 0e (Undeterred)
2c 9f 0e (Demon Dodger)
2c a1 0e (Speedy Runner)
2c a3 0e (Spacetime Traveller)
2c a5 0e (Embracer of Paradoxes)

All credits go to deity. If medal wont come, i accidently used other AoB, which would send stats to Kong

Now I've finished the game legit; time to get some of the hard to get medals...

For both Demon Dodger and Undeterred (though the latter is easy to get) use the below AoB and complete either level 7 or any other level to get the appropriate achievement.
62 04 27 14 1f 00 00 =>
62 04 27 02 02 02 02

For Speedy Runner, use the below AoB and then pass one level between 1 and 5: (I got this legit so this isn't tested, but should work)
62 06 25 b0 09 =>
62 06 25 FF 7F

For Spacetime Traveler [sic], use the below AoB and then pass one level between 6 and 9: (I used level 8 as it's easy and it does work)
62 07 25 b0 09 =>
62 07 25 FF 7F

For Embracer of Paradoxes, use the below AoB and then pass one level: (I used level 8 and did Spacetime Traveler [sic] at the same time - note you will get this badge awarded before the other speed badges, you can of course argue this out if somebody challenges you on it, but you may want to do this one last)
62 08 25 f4 08 =>
62 07 25 ff 7f

Updated my original post to add more AoBs.

You're on your own with solving the individual levels - they are quite easy once you've played them a lot. It must be easy: I can do it and I suck at platformers :-)

I managed to get the medals with a bit of practice and speedhack at .5 speed. Only took me about 2 hours. If you want to do it half legit I guess lol.