Well, I have to admit that those are probably one of the most annoying controls I have ever met. Inconsistent when it comes to the length and the height of the jump, slippy like hell with terrible mid-air control.
Besides, I finished one of the levels without collecting any of the DNA but my total amount still went up. Oh, while The Vaccine character has a description that it can save Miguel the medal for me unlocked instantly after I reached 150, is this intentional?