Really digging the style of this map.. reminds me a bit of Ducati's and Zerxus' leveling, which is great. Has an old school feel to it but more modern in terms of graphics and perspective. Good to see an old school level artist back in action. Cant wait to see the completed version, assuming you find the time to do so. Regardless, awesome stuff!
But yeah, that light house is definitely a bit funky.. id say adding some diagonal tiles for it to give it a more rounded look would help it quite a bit. If you ever need help with graphics or some pointers on this you can hit me up on skype at sage_shadowbane. Keep up the good work! Would be nice to see this completed and turned into a full fledged server.