Town survival I have made it to 25 with a partner. Solo, I have made it to 23. Tranzit to me is ALOT easier to make it to higher levels bc you have more room to round up the zombies then unleash ur bullets into them.
Well me and 2 others made it to 33 last night but our 4th guy quit at like round 27 on Town. He kept dying even tho we kept reviving him. Sux it doesn't count if someone leaves. Gotta love monkeys on zombies tho XD