That one is pretty difficult and has some tough timings. The game was made in a month and that challenge wasnt playtested very much so I apologize for the imbalances in difficulty. To get the targets underground you have to throw the gear to the right into the right wall and then run left so that it hits the purple arrow on the way back. The rest of them you either use the bombs bigger explosion from absorbing more projectiles or the throwing/warping ability to hit targets inside of walls. The part at the top is pretty difficult with all the hazards, it just requires some precise warp timings.
