Here it is, it's just the classic one fiddled with a bit.
Attach the radar script to an always active entity, use Dynamic Lua settings to tweak position, size and radar range.
Attach the objectives script to some active entities and dot around the map, use Dynamic Lua settings to select the colour of the objective and whether to remove it from the radar when the player arrives at it.
Been there, done that, got all the T-Shirts!
