on puzzle "under fizzler" swap laser receptor with laser emmetor to see faster what receptor does.
on first checkpoint avoid player to jump behind Laser + Fizzler and ennable the checkpoint respawn

avoid player getting stuck in spawner by killing them on respawn if they get stuck
avoid player to reach button on roof without using bridge
changed place from the button that disable the laser to take cube stuck in funnel.
put signage to show player that they can get back cube + bridge if they reach the 1st funnel that take cube away
put a checkpoint that disable laser where cube goes, (checkpoint enabled with the button that gives a jump to his mate)
put a short cut to press companion's cube button

Avoid player to respawn after checkpoint if they didn't reach it