When I've built a machine that uses steam cannons and started the game in slow-mo, I've found strange behavior.
At regular timescale, a heated water cannon turns into steam cannon after ~0.5 sec of heating. So at timescale 20% it SHOULD be activated after ~2.5 sec, right?
Yep, the same.
After some research I've found a bug in the game. When checking for this achievement, game checks existanse of blocks from Menu "3".
Menu was an ARMOUR menu:
It has the following blocks:
Now you'll get this acievement only when you do the job without armour blocks.
I've faced the same issue with deletion. It seems to be related to "Easy Scale" mod. Couldn't reproduce it without "Easy scale" mod.
Reproduction steps (stable for me):
1) (re)Launch game
2) Enable "Easy Scale" mod if disabled
3) Enter sandbox map
4) Place a block
5) Delete it via "delete" key...
I am host. Here are steps I've rechecked 1 minute ago:
1) Launch game
2) Enter multiverse as host
3) Load/create machine with circular saws or drill
4) Add brick wall
5) Disable it's physics
6) Start level
7) Crush the wall (make the machine hit wall with drill or saw)
And after level stop this...
I've just broken unbrakeable brick wall with a circular saw. Just drag the saw in god mode towards the wall. Also seems breakable by drill.
Items that where broken by this never respawn and still broken even untill level restart (stop + start)
I've discovered it when I tried to cross a bridge...
I'm facing the same issue.
My machine has grabbers with bombs, launched by rockets.
When the bomb explodes, the grabber flames up (???) and hangs for several seconds:
Than they fly back to the launch point (still flaming!) and destroy the launchpad.
It is possible to pass the level just moving the start block around. It hits the box and the book inside, so you can move the book to the needed position and then return start block back to the bounding box to pass the level.
If you build machines like on the screenshots, they will move forward (for the first one you should disable gravity to fly). This means impulse of water is much bigger then return of cannon. It can't be true in real physics world.