This is for people that like to play Escalation solo (no other players). Do you have a particular map/character/strategy that you like to use? I like to use Air Raid on broken Hope. It's easy to stand on the bridge facing one of the big spawn points and shoot things in the courtyard below. Plus, his cloaking ability gives you the ability to reach ammo and health as needed. Only downside is that you're vulnerable to seekers and the missile drones that spawn from the spawn point located up there, but they are generally easy to deal with. Last night I got to wave 14 before I went for ammo and got hit by a brute. Of course, everything targeted me at that point and I was done pretty quickly thereafter. I have been able to get to wave 22 that way before (that time I had to quit because it was late I had to work the next morning). I can usually also get to around wave 6 or 7 using Air Raid on Forsaken, and I could probably get pretty far on Pulse if it didn't glitch on wave 6. I kill everything on wave 6 on pulse, but the level doesn't end.