I just finished the campaign on Nightmare in coop with a friend. I'm not really sure how I feel about coop in the game now. I mean, don't get me wrong, it's a lot of fun but nightmare coop was SIGNIFICANTLY easier than solo normal difficulty, like not even a comparison. The only trouble we had was crunch (unsurprisingly), every other level we mostly just messed around in. Two players at 1 choke point is just absolute overkill.
Also dived into endless mode with my friend. We went to king of the hill first and ended up making it to the 40th wave. 2 comments about that:
King of the Hill might be my favorite map between the 2 games. It is MASSIVE (with portals in good spots thank goodness!) and just has this epic feel to it. By the time we got to wave 40 we probably had like 300 traps laid down across the map.
Other thing is it is a surprising amount of fun. Around wave 20 or so it starts to get really hectic and you really have to coordinate and work out a nice little rhythm to keep everyone at bay. We probably would have made it to wave 50 but around wave 37 the flying enemies were just too much for ~15 archers to handle on their own. Going to replace all of them with ceiling traps next time.
Does anybody have any suggestions for Crunch? I'm having a really hard time on that level.
The strat I posted earlier got me 4 skulls on what was basically my 4th try of the level.