I generally fly with my friends, or my clan, so it's easy to gather high levels around me.
Even when I don't, I encounter a lot of level 7+, and a few level 10+.
I expect people will level up as I do though, and I think if you've hit 7+ you're pretty committed to the game.
It might be I play during peak hours or something, but I think you guys are severely exaggerating how difficult this is. The levels should loosely follow exponentials, right? I've spent a long time on level 8. These are the easy 'chieves. I really want level 9. But nobody uses harpoons. I'm not complaining, but if I see a ship 'pooning I immediately try to get a 'poon'd kill.
Jess fixed the requirements for the stuff that was actually ridiculous, but the community is still maturing. Give me some time and I'll play a level 10 against you. I do agree that a perfect victory at high levels is a bit...unlikely. Stuff like that I'm on board with relaxing.
I think Muse should take a look at the system. A hard level cap at 15 or something would not be a bad thing. I'm fine with not having infinite levels. I'm in favor of interesting challenging achievements, but I don't think they should punish people who don't fly during peak (or certain timezones) or with a clan.
I don't mind trading losses for achievements, because I still see this as a game and don't care about my statistics (I do like my rank going up tho), but that's only stuff like "harpoon people" or "ram kills" that I can do whenever and not feel bad.