For assembling plastic figures Revell Contacta cement takes some beating. It has a decent wriggle room to enable you to line up parts correctly, and has gap filling properties that eliminate the hollow joins you can sometimes get on arms etc. Tamiya’s extra thin (Known as TET in the plastic modelling community) is useful for small parts and kit construction. If you can find it, Tamiya tool cleaner is the same stuff but is much cheaper, so buy that to top up your original bottle. For ABS, TET will work, but a hotter Butanone based adhesive is better. Try plastruct or C and L ABS cements for those. You will see EMA sold in bottles in most model shops, and using an old paintbrush this is as good as TET, if slightly less convenient.
Hot glue seems to be akin to heat melted PVA to me, so needs a porous or rough surface to give its best. Using it to stick smooth non porous surfaces will simply make it pop off under any stress. For sticking miniatures to bases Gel superglue is best if you are in a hurry, or five minute epoxy is best if you are not.
I base my plastics on coins to get a bit of weight to them low down. I use gel superglue for this, then use a basing compound concocted from sculptamold mixed with PVA glue and coloured with powder paints. Never had one come off yet…..