Finished it (currently at 264~ bots rescued). Great game, even phenomenal at times. Too easy though. Platformers that don't penalize you for failing just lack challenge, you can literally restart from 3 seconds ago, which is like an invincibility cheat. Then again, the low difficulty contributes to its delightfulness!
What I hope for in a future Asobi game:
1. Bigger stages, fewer is fine.
2. More spread out checkpoints.
3. 2 or 3 powerups per stage.
4. 1 or 2 extra basic moves.
5. Health system of sorts (maybe something like the three attempts at boss fights).
6. Hard mode with limited lives per stage.