Title: A New Challenger (5G)
Description: Skip a checkpoint & beat a level
Very easy achievement. As funny as it was, I didn't even know how checkpoints worked at the beginning, so I always jumped over them in fear of getting hit and restarting!
Anyways, simply replay the first level and jump over every checkpoint (there should be only one or two) and win! You can also try and get the Bullseye at the end for the other achievement to get your first "Perfect +."
The checkpoints are thin red lines that, upon jumping over, you should begin being stalked by the individual "thing" that stands behind the checkpoint for five seconds. You should also get a 50,000 points bonus.
Hope this helps!