Fixed ground collision so that it is now a box
Better checkpointing:
Player can jump off objects in layer 'Ground', also should have the tag ground
Player is respawned on objects with tag 'Instant Kill' (no layer requirements).
Player respawn point is set on colliding with object with 'Checkpoint.cs' script attached.
Checkpoint can specify respawn object or if left unset will use the closest object with 'Respawn' tag.
Any specified respawn objects and all with the tag 'Respawn' will be hidden. It is best to tag all respawns as "Respawn", but not to rely on the "choose nearest if not set" functionality.
Fixed ground collision so that it is now a box Better checkpointing: