Hello. Have you played solo in a Custom match instead of going solo in a solo match? If you play solo in Custom match, you get significantly more aliens and also more special aliens like Rhinos, Phantoms and Seeders. The game seems to scale the enemy numbers up, as if you were in a team. You also get 0 revives. I personally prefer playing that way when using weapon specialist, armor, vulture/sentries and 2 machine guns or 1 machine gun and bulldog since 1) that kind of a build is a dps monster and that difficulty allows me to push the build to its limits, and 2) you get so much money out of it that you can spam killstreaks. Kraken fight is perhaps the best example of this. Not quite sure how playing that way would go without running weapon specialist. Double class of course can incorporate weapon specialist, but if someone did not have that and tried to complete a match with e.g. Medic or Tank, it could propably be more difficult due to the lesser dps from primary weapons...