у меня с ускорением не получалось, как я уже писал - даже с сапогами и с прыжком, поэтому мне и хочется выяснить - у меня просто не получилось или там есть какая-то хитрость, вроде появляющейся "звездной дорожки"?

в 3 эпизоде есть секретная локация, которая выглядит не то как круглая, не то - квадратная арена, на которой периодически появляются монстры и что-то открывается, там еще разбросано множество вещей и боеприбасов. так вот, как попасть в эту локацию, я проходил несколько раз, но попадал туда не каждый, и как выйти - в какой-то момент монстры перестают появляться и ничего больше не открывается

. как пройти момент вроде бы в 4 эпизоде, где дергаешь за рычаг и под тобой проваливается пол, без него в соседней комнате не откроется проход, сапоги-скороходы здесь не спасают, я прошел с помощью крыльев, полученных читерским путем, однако как пройти без читов?

да без проблем там можно пробежать

The Cave Key

The Cave Key is in the Caves of Circe. Go to the temple in Shadow Wood, to the room with the six panels. If you look at the map, you'll notice that there are two passages that lead to this room from the front of the temple. Go to where the north passage enters the room. Walk in front of the black mask there. This activates many traps in the temple, and also raises stairs in the front corridor. Run back to the front corridor and go up the new stairs that just raised. (This is north of the entrance to the temple.) Be careful! Don't fall of the last step: you need to jump (actually running will do) into the opening on the right at the top of the stairs. This goes into the room where the chaos serpents are, which overlooks the room with the six panels. Go to the centre of the room and look for a small manhole near the west wall. Jump inside and pull the switch. Now, go back to the opening at the top of the stairs where you came in (not the other opening which also leads to another part of the temple's front corridor). The switch you just pulled has lowered the stairs below ground level. Jump down and go to the bottom of the steps. There's a secret opening here which shuts behind you as soon as you enter it. Don't worry; follow the short passage into a large room with lots of goodies.

Hold it there! Don't be greedy!

Carefully step into the room and stop. Floors and ceilings will start to move; some pillars will crush down from the ceiling. Deep pits will form in the room. When things have calmed down, you can follow the right ledge, which will lead you to a room with the portal to the Caves of Circe.

Alternatively, follow the left ledge (you need some jumping around for this route), until you come to a switch on the wall. Activate this switch, and the deep pits will be removed, partially restoring the room. (Thanks to Michael W. Daniels for telling me about this switch!) Now you can walk around the room and collect the goodies here. After collecting the goodies, look for the room with the symbol of Korax and step into the portal.

This takes you to the Caves of Circe. Turn right and jump down from the ledge where you start, and turn right again. Jump down the hole with bats flying out. Now you are in what I call the Ettin Cave (you have to put up with my silly names because I'll be referring to them when giving you directions). There are three exits from here; take the leftmost one, which leads to Skylight Cave. I call it that because you can see the sky through the big crack in the ceiling. Turn right when you enter the Skylight Cave, and jump into the hole at the end of the passage (or fall into it if you didn't see it!). This is a small cave that opens out to a corridor. Go out on the corridor and turn right. Take the first left turn. This takes you to what I call the Middle Cave. The Cave Key is here.

Note: you must jump into that small cave before the Middle Cave opens, even though there are many ways of reaching the Middle Cave from the Ettin Cave. Sorry for the mistake I made in the previous version of this walkthrough, when I thought that you can reach the Middle Cave without going to the small cave.