I've posted this to a few other forums in the hope of answers, so apologies to anyone who's reading this twice.
I've been playing Anima with a couple of friends for about half a year now, and just as we were about to hit level 7, it was decided that since we'd hit an appropriate point story-wise, we'd have a Shounen-anime style timeskip, and crank the game up to level 10. Before any actual play, we had a bit of a combat test against a level 9 enemy (some kind of golem), a level 10 enemy (some kind of demon warlock thing out of the back of the book), and a level 11 enemy (an Elder Dragon). The party is a Tao (my character), a Ranger, and a Dark Paladin, in order of ascending toughness. The stats, as I roughly recall them;
Tao:
LP 185
AT3 to all areas against all types, except Energy where it's 7
Attack 275 total
Defence 210 total
10 of each of the Attack/Defence is from Asakusen, they also get a +10 variable bonus from Kung Fu.
Our Dark Pally has something like
LP 220+
AT 11 against most types to most areas
Attack of 285 (with main weapon)
Unsure of their defence.
Ranger is
LP 210 (ish)
Complete Leather (and 70 armour use)
Att 270 (with weapons)
Def 180
Which is to say, for a level 10 party, we're all fairly squishy.
In summary:
Golem seemed on the easy side of reasonable; It stressed up on its Initiative roll, meaning it managed to get to go before my Tao (who has 175 before dice), and managed to get a solid hit in on our Dark Paladin with an AoE attack, enough to cause a Critical and make him decide to fall back. The Tao and Ranger were hit, but both dodged sufficiently well to avoid taking damage, and then managed to kill it the next round between them.
The Dragon was next, and was muuuuch harder; My Tao got a round of decent hits in, but took over his total Life Points in damage from a single attack (the third one that round; which meant stacked penalties to Dodge). The Ranger and DP managed to hold out for another 3 or 4 rounds or so, but then the Ranger took a similar amount of damage to my Tao in a single hit, and then the round after the DP took all three of the Dragon's various attacks all by himself and was crippled beyond being able to put up a fight by the last one and we called it a loss there.
The last one was kind of an anticlimax; My Tao caused a critical with the first hit, but then rolled poorly for followup attacks, only for the Ranger to kill it in a single shot after that.
We'd had a similar problem beforehand; a Clockwork assassin had proved to be unexpectedly lethal, despite being built to the same level (or maybe one higher) than our party. And before that, we've had one or two fights end in a single good hit, much faster than expected. Consequently, we're all wondering if this is a fault of the system, something to just keep in mind, or something we can do something about. The damage characters output seems disproportionate to their Life Points at higher levels, and Armour and higher dodge/block scores only count for so much. So far our GM has suggested simply doubling everyone's Life Points, which would mean that what was formerly a one-hit-kill would now become a potentially crippling but not necessarily decisive critical hit instead. Has anyone else tried playing Anima at levels 8, 9, 10, or even higher? Any suggestions on what we can do? Rather, if you say "don't double the LP", please have some kind of alternative suggestion.