First of all, it's impossible not to be impressed by the amount of real content in this game. The game could feasibly take someone 10 hours to finish on a first playthrough and I expect most will be over 8 hours at least. For an indie 2D platformer with a breakneck pace that's a lot of level. The level design is more ambitious than the first game with long, complex, multi-route levels. There are many gimmicks and almost all levels have a good sense of individual identity both visually and in terms of gameplay.
This scope is impressive but it's clear that the developers had ambitions beyond reason, leading to both a lengthy development period and a really hit-and-miss quality to the levels and boss fights. Some levels, like the Ancestral Forge and Nalao Lake, are really bad, but there are also some great stages— Lightning Tower is my favourite, mixing in some very light puzzle elements with hazards that are activated as you turn on power, and generally a more calculated level design with a good sense of progress as you climb.
Sadly, most of the levels are at least a little chaotic, as there are enemies and stage hazards that seem unavoidable given the speed of the game. In one stage, there is a crushing block hazard that drops so fast that you actually can't avoid it if you're stood still, which you may be if you boosted forward and bopped off the wall where it comes down. Enemies are almost entirely not worth dealing with, as many of them have untelegraphed attacks and a tonne of HP, but you will still take plenty of damage from enemies that attack as you run past. The added guard mechanic seems useless but thankfully wasn't required for Lilac, whose dash has about a billion i-frames and does good damage.
In general, the difference between FP1 and 2 is that the former feels more restrained, with level design that guides you forward, whereas FP2 regularly makes it difficult to tell which way you're meant to be going. And unlike FP1, the core gameplay isn't quite as engaging, since besides some good platforming and gimmicks you're mostly just ignoring the enemies and taking random hits. It lacks that sense of connection. Doesn't help that when you do attack an enemy, there is no feeling of impact (unlike the player character who gets stunned by hits). The effect of this is that the game is quite exhausting to play at times and it took me a while to finish.
And those bad boss fights... man. The fights against really large bosses are usually fine, mid-sized bosses are mixed and the player-character-sized bosses are almost all complete dogshit. Why? Well, smaller foes are typically either off-screen, or close enough to instantly cause harm to you. Also, many of their attacks turn their bodies into instant hurtboxes, and often aren't well telegraphed. Some are less bad than others, but the absolute worst is Askal, who does half-screen jumps into ground-slams, and spends half his time surrounded by little projectiles. Also a dashing punch that comes from offscreen that you have to anticipate every time he stops slamming, because there is no other cue.
The writing for the first game was much maligned and if anything this sequel doubles down, but I can't bring myself to hate it. I love that the furry freaks behind these games put their all into making their fantasy about anthropomorphic cats & dogs, colonialism and historical revisionism come to life... sincerely, it's kind of wholesome. In terms of quality it's like some kid's TV show. Whatever. The lowest point is probably Captain Kalaw. He seems as if the writer played the Ratchet and Clank remake and though Captain Klark was sooooooooooooooooooooooooooooooo frickin funny. To be fair, that only jumps out to me because the writing is otherwise much less bad than that game. I also saw a reviewer compare it to YIIK which seems like a wildly unfair assessment. This is fine for small kids but also tedious to sit through because we are adults and we like to consume dense things rather than liquid slurry.
I know that this review comes across as negative, and that's largely because I can't help but compare it negatively to the previous game. It's really not all that bad though, just hit-and-miss. Some levels are fun and suffer less from the general design issues. There were points where I'd sit down to play the game, go through two 8-minute levels and be completely checked out afterwards. Other times I'd get hooked on a really good level or set of levels and find myself playing for a good while.
For a quick summary, if FP1 is an 8.5/10 than FP2 is like... a 6.5 or 7.