Hey everyone, a little while ago I started working on a small modpack entitled "Al's Puzzle Pack". It's made in the style of the game Portal, where you advance through a series of hand-crafted levels that feature modded content (unlike other adventure/puzzle maps), including Chisels & Bits (in a puzzle pack!?), TIS-3D, SecurityCraft, SimpleLogic gates, and OpenBlocks elevators.
Though I put a fair bit of time into making this pack, the nature of hand-crafting high-quality puzzles is that the amount of time it takes to play through all of the content is relatively small, probably no more than 2 or 3 hours. I've added a timer mod with precise start/stop timing for those who like the challenge of speedrunning. I recorded a few attempts at a speedrun myself which can be found on youtube just to get it out there. Currently my best time is 5 minutes and 12 seconds.