Completion of phocas.wad on UV

Has anyone achieved this? Or am I right to say that this level is too difficult for it to be possible?

Yes

I just played it on UV, and it's a very large detailed map, and I like that. The island theme is well done, but Good Great God in Heaven, why do you have to bombard the player ALL THE FUCKING WAY THROUGH WITH WAVES AFTER WAVES OF MONSTERS?! This map would have been much much better if the enemies had been used in moderation.

To summarize: Good map nearly ruined by the waaaaaaaaay over the top difficulty.