Hey in this game you should collect spherical light objects and bring them to the beacon to light it up and start the next level.
There are 5 light sources on level 1 and 4 ones on level 2. Light does not respawn, so you have to find them all and interact.
To collect the lights press RMB near the appropriate object.
Not much of planned stuff we were able to cover, but that's it. :) If you have more questions feel free to ask.