Cool game! Made it down to around 2000m. Most of what I have to say has already been said by others, and with compo constraints there wouldn't have been time for the last two, but to summarize my impressions:
Favorite parts: Funny dialogue, solid artwork, great take on the theme, fun/simple controls
Issues: -Dialogue and game movement being on the same key. The simplicity of all the controls being on click is nice so personally I would have kept that. Maybe having the player click a specific "Next" or arrow button so they don't accidently skip? Best of both worlds in my view. -A little more variety such as different obstacles or block types would go a long way. There may be issues with things like obstacles being outside of the players view while switching lanes, but I think suggestions from other commenters like a small preview of what's on the other side could help there and open up potential for new mechanics. Just a note, with time constraints I know that's hard! -Some more visual reinforcement that you're "going deeper" (like changes in background every 1000m) could go on long way in making the player feel rewarded for reaching greater depth thresholds.